1,721,113 research outputs found
Editorial to selected papers from the 3rd IMEKO International Conference on METROLOGY FOR ARCHAEOLOGY AND CULTURAL HERITAGE 2017
No full textDesign, implementation, and metrological characterization of a wearable, integrated AR-BCI hands-free system for health 4.0 monitoring
Full text linkAn integrated real-time monitoring system based on Augmented Reality (AR) and Brain–Computer Interface (BCI) for hands-free acquisition and visualization of remote data is proposed. As a case study, the monitoring of patients’ vitals in the operating room (OR) is considered; in particular, through the suitable combination of BCI and AR, the anesthetist can monitor in real-time (through a set of AR glasses), the patient’s vitals acquired from the electromedical equipment. Healthcare-related applications are particularly demanding in terms of real-time requirements; hence, the considered scenario represents an interesting and challenging testbed for the proposed system. Experimental tests were carried out at the University Hospital Federico II (Naples, Italy), employing pieces of equipment that are generally available in the OR. After the preliminary functional validation, accuracy and delay were measured, demonstrating the effectiveness and reliability of the proposed AR-BCI-based monitoring system
"Microwave Reflectometry for Sensing Applications in the Agrofood Industry", contained in "Smart Sensors for Industrial Applications"
No full textThe present chapter describes some of the most promising applications of microwave reflectometry (MR) for monitoring and sensing purposes in the agrofood industry. The present chapter focuses on three specific applications in which MR is employed for monitoring purposes in the agrofood industry. In particular, the following applications are considered: 1. Moisture measurement of granular agrofood materials; 2. Quality control of vegetable oils; 3. Monitoring of dehydration process of fruit and vegetables
Apparato e metodo per il rivelamento e la localizzazione di perdite e guasti in condotte interrate
No full textSistema per la ricerca perdite in condotte idriche e fognarie interrat
Classification and adulteration control of vegetable oils based on microwave reflectometry analysis
No full textOlive oil production represents a big part of the Mediterranean economy, and as such it must be protected
from frauds. For this reason, it is necessary to develop alternative low-cost techniques, applicable on large
scale, for checking the quality of the product and for detecting adulteration. On such bases, the present
work deals with the possibility of adopting microwave reflectometry for obtaining a ‘spectral signature’
of vegetable oils. For this purpose, time domain reflectometry (TDR) measurements, in combination with
specific data processing, are first used for the dielectric characterization of several oil types. Successively,
the acquired data are processed through the principal component analysis (for identifying clusters of oil
types that exhibit common features) and through the partial least square analysis (for identifying a predictive
model for detecting oil adulteration). Results confirm that the proposed procedure holds considerable
potential for quality and anti-adulteration control purposes, especially in view of practical
applications
Smart membranes and pipe monitoring networks; waterproofing and real-time leak detection systems
No full textSensor UK developed electronic geomembrane leak location monitoring systems for use on hazardous waste storage sites in the 1980s. The technology has been developed and adopted by industries to provide reliable and accurate geomembrane leak detection, designed to contain or protect assets. The technology came to the UK water industry during concern for failing assets and unreliable coating systems, crucial to potable water supply. Various levels of protection have been developed from simple loose-laid impermeable membranes to real-time notification systems and remote operating of the membrane interrogation software. A DWI Regulation 31 Approved geomembrane, designed for use in contact with potable water utilising the technology, identifies and locates leaks. The system has been installed above service reservoirs for various water authorities in the UK and Canada but is also suited to lining impounding reservoirs, tanks and lakes as well as chemical-free water treatment facilities
Improvement and Metrological Validation of TDR-Methods for the Estimation of Static Electrical Conductivity
No full textAccurate measurement of the static electrical conductivity provides a great insight into the characteristics and quality status of various materials. To overcome some limitations of the traditional measurement methods, there has been a growing interest toward the investigation of enhanced techniques for measuring electrical conductivity. In this regard, time-domain reflectometry (TDR) has attracted considerable attention, also due to the possibility of simultaneously monitoring different physical parameters. Although initially introduced for monitoring soil properties, the application of the TDR-based technique might be an interesting and cost-effective means in many other fields. However, the accuracy of traditional TDR-based electrical conductivity measurements is strongly influenced by the preliminary calibration technique. On such basis, in this paper, two innovative approaches for a more straightforward and accurate evaluation of the electrical conductivity are presented. The first method relies on the combination of the TDR measurement with transmission-line modeling (TLM); the second method simply relies on a couple of independent capacitance measurements (ICMs) performed through an LCR meter. As a further goal, the metrological performance of this last method is compared with that of the traditional method, thus validating its applicability. Experimental results and related uncertainty analysis on various samples demonstrate that the proposed alternative method is definitely suitable for a simpler and accurate estimation of the static electrical conductivity, also when dealing with moistened soils
Un Metodo Combinato per Migliorare l’Accuratezza nelle Misure di Costante Dielettrica in Materiali Granulari
No full textDielectric spectroscopy of liquids through a combined approach: evaluation of the metrological performance and feasibility study on vegetable oils
No full textIn this work, a time domain-based approach for the
estimation of the dielectric parameters of liquids is presented. The
proposed approach combines traditional time-domain reflectometry
measurements with a specific data processing and modeling
that leads to the evaluation of the Cole-Cole parameters. The pivotal
step of the procedure is the implementation of an accurate
transmission line model of the used measurement cell. In this way,
the error contributions due to undesired parasitic effects are minimized;
hence, the overall accuracy is significantly enhanced. The
proposed approach is tested through repeated measurements on
well-referenced materials; this also allowed performing the related
metrological analysis. Successively, the proposed procedure is applied
for the evaluation of the Cole-Cole parameters of vegetable
oils. In fact, at the state-of-the-art, only limited data are available
for the dielectric characteristics of vegetable oils. In particular, ten
different types of vegetable oils are considered. Results show that
the proposed approach has strong potential also for possible practical
applications in the area of anti-adulteration and quality control
An Innovative Method for TDR Measurement of Static Electrical Conductivity in Granular Materials
No full textTime domain reflectometry (TDR) is a robust approach for measuring static electrical conductivity of moistened granular materials. Although initially introduced for monitoring soil salinity, its application to granular materials might be an interesting and cost-effective means for monitoring the quality-status of various materials. However, the traditional approach requires tedious and time-consuming preliminary calibration measurements on reference liquids. In this paper, an innovative approach for the direct estimation of the electrical conductivity is presented. In fact, it is demonstrated that the suitable combination of the TDR measurement with a transmission-line modeling of the measurement setup, successfully leads to the avoidance of the preliminary calibration procedure. Investigations carried out on water and on moistened sand samples demonstrate that the performance of the proposed method in estimating the static conductivity is comparable with that achievable through the traditional approach
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