The monitoring of photovoltaic (PV) systems is important for the optimization their efficiency. In this paper, a low-cost smart multisensor architecture equipped with voltage, current, irradiance, temperature, and inertial sensors, (at panel level) PV system, presented aim detecting causes efficiency losses. system based on Wireless Sensor Networks sensing nodes installed each panel. acquired data are then transferred to service center where dedicated paradigms continuously perform...

A multidisciplinary approach integrating a wide data set ranging from bulk rock compositions of the erupted products to volcanic tremor, long-period events, and tilt gravity signals is used investigate source depth magma dynamics 10 May 2008 lava fountain at Southeast crater (SEC) Mount Etna. The investigation was undertaken in framework previous 2007 explosive activity as well subsequent effusive eruption beginning 13 lasting up July 2009. All concur indicating that generated by...

The use of nonlinear architectures for energy harvesting can significantly improve the efficiency conversion mechanism, as respect to linear devices, especially when mechanical is distributed over a wide frequency bandwidth. This case form wideband vibrations. In this paper, performances piezoelectric harvester exploiting snap-through buckling configuration are investigated. device supposed switch between its stable states, where two transducers positioned implement mechanical-to-electric...

In this paper, an inkjet-printed sensor in the mesoscale is presented with aim to investigate its behavior as accelerometer low-frequency domain (up 20 Hz), which properly fits need of typical applications field human and seismic monitoring. The consists a Polyethylene terephthalate membrane clamped by four spring legs fixed support. sensing readout strategy implemented through strain gauges directly printed onto flexible substrate. advantages approach proposed are mainly related adopted...

[1] Geophysical (tilt, seismic tremor and gravity signals), geochemical (crater SO2flux) infrared satellite measurements are presented discussed to track the temporal evolution of lava fountain episode occurring at Mt Etna volcano on 10 April 2011. The multi-disciplinary approach provides insight into a gas-rich magma source trapped in shallow storage zone inside edifice. This generated fast ascending gas-magma dispersed flow feeding causing depressurization deeper storage. Satellite thermal...

This paper deals with a novel system to assist weak people in exploring indoor environment. The is based on WSN and smart paradigms which extract suitable information from data collected through the multi-sensor architecture. Such then provided user for safe efficient exploitation of environment supervisor assessment management hazard situations.

In the field of energy harvesting, it has been demonstrated that under appropriate conditions, nonlinear configurations harvester can provide better performance, compared with linear resonant oscillators; performance is quantified in terms amount extracted from environmental mechanical or seismic vibrations. this paper, results investigations on a system for harvesting wideband vibrations, using snap-through-buckling configuration and two piezoelectric actuators, placed at stable minima...

The pull test (PT) is a common practice to assess the postural instability of patients with Parkinson's disease. Postural serious issue for elderly and people neurological disease, which can cause falls. implementation PT consists in observing user response after providing tug patients' shoulders, order displace center gravity from its neutral position. validity be compromised by nonstandard backward provided patient. solution proposed this paper low-cost multisensor system allowing an...

It has been demonstrated that, under the proper conditions, nonlinear configurations can provide better performance, compared to linear resonant oscillators, in terms of amount energy extracted from environmental wide spectrum mechanical vibrations.Recently, authors presented results investigations on a system for harvesting wideband vibrations, using snap-through-buckling (STB) configuration and two piezoelectric transducers.The device was shown be capable providing sufficient electrical...

Different solutions have been proposed to address orientation in indoor/outdoor environments and among them, radio frequency identification (RFID)-based systems represent a strategic choice for its reduced complexity cost. Widespread practices validate the behavior of RFID-based use specific metrics related addressed application, while general strategy assess technical performances system is lacking. In this paper, novel measurement approach perform optimal choices developing an impartially...

A novel optical platform has been used to monitor the interaction between a molecularly imprinted polymer (MIP) and small molecule. The new sensor is made of polyethylene terephthalate substrate with pattern silver nanoparticles, printed on it by inkjet technology, two plastic fibers (POFs). POFs connect sensor, later covered MIP layer, light source spectrometer. detection furfural (furan-2-carbaldehyde, 2-FAL) in aqueous media was investigated exploiting selective receptor. experimental...

In this paper, the results of investigations on a system for energy harvesting from wideband vibrations are presented. The harvester adopts nonlinear snap-through buckling configuration and two piezoelectric transducers, placed near inflection points potential function that underpins dynamics system. device is capable scavenging vibration sources in range 0.5-7 Hz, but could be exploited up to 10 Hz with an acceptable loss efficiency. bandwidth compatible applications where occur at low...

Accurate detection of time gravity changes attributable to the dynamics volcanoes requires high-precision measurements. With aim improving quality data from Mount Etna network, we used both absolute and relative gravimeters in a hybrid method. In this report, some techniques for surveys are reviewed, results related each method compared. We show how total uncertainty estimated measurements performed with combined use is roughly comparable that calculated when acquired using only (the...

The monitoring of Activities Daily Living (ADL) is a fundamental task to implement rigorous remote weak users with particular regards falls. Actually, unintentional falls cause lot hospitalizations and could produce serious consequence due long-lie happenings. widespread use smartphones associated the wide variety embedded sensors would represent suitable solution for ADL monitoring. This paper faces development fully smartphone based detector which uses advanced signal processing provide...

A new planar contactless passive all-inkjet printed touch sensor realized by low cost printing technology on a PET substrate is discussed. The device exploits capacitive readout strategy while the operation based LC resonance method which converts changes of C into frequency domain. Advantages proposed solution reside both in technological process and readout. Main outcomes inkjet adopted rapid prototyping really cheap disposable sensors. enables use applications where cannot coexist with...

This paper deals with the RESIMA architecture developed to assist people in performing daily activity indoor environment. As respect solutions presented SOTA, is a smart multi-parametric assistive system which performs high resolution monitoring of user position spatial-temporal domain as well deep inertial status, thus assuring reliable and continuous form assistance weak users. The based on Wireless Sensor Network paradigms extract relevant information from data collected through...

Monitoring a PV plant has remarkable impact on its efficiency. In this context, Wireless Sensor Networks (WSNs) can be low cost, but reliable solution to perform the real-time monitoring task. The main objective of work is realization WSN that allows monitor at panel level efficiency Photovoltaic (PV) panels, provide data useful investigate causes losses and detect inertial events possibly related attempts theft or tampering also mechanical striking events. Nodes WSN, which are installed...

Early warning systems (EWS) for the structural monitoring of buildings and structures have a notable impact safety same populations. These significantly increased with availability wireless sensor networks (WSNs) which represent low cost, but reliable solution, to perform real-time task. The main goal this work is realization customized multi-sensor node, based on WSN, suitable implementation distributed EWS structures. proposed solution uses two inclinometers one triaxial accelerometer,...

Gravity time sequences collected at Etna volcano by continuously recording spring-based relative gravimeters showed significant variations in temporal correspondence with paroxysmal eruptions. Since the observed gravity can only be partially related to subsurface mass redistribution phenomena, we investigated instrumental effects due ground vibrations such as those that accompany explosive activity. We simulated performances of laboratory experiments estimate their response vertical and...

In this article, a novel inclinometer exploiting magnetic fluid as the inertial mass and an optical readout strategy is addressed. particular, device behavior has been modeled experimentally observed by means of dedicated set-up. The proposed uses 5-mm diameter glass pipe filled with water drop ferrofluid (FF), retaining mechanism based on permanent magnet infrared (IR) strategy. latter used to measure position inside pipe, which strictly correlated sensor inclination. main outcomes sensing...

Early Warning Systems (EWSs) for the monitoring of buildings and structures are strategic to implement efficient safety actions. Even if very accurate solutions available in market, these not suitable distributed large areas due costs, maintenance installation needs.In this paper a low cost approach investigate seismic response is presented. The proposed architecture based on customized network multi-sensor nodes, equipped with two inclinometers one triaxial accelerometer. sensing system...

In this paper, a measurement methodology for the characterization of mechanical and electrical behavior nonlinear vibrational harvester is discussed demonstrated on real case study. The harvester, here considered, takes advantage flexible beam in snap-through-buckling configuration novel magnetic repulsion mechanism to compensate asymmetric device, vertical direction, due effect proof mass load. A protocol aimed at device performance estimation terms minimum acceleration, number switching...