A5103131953- Network Time Synchronization Technologies
- Non-Invasive Vital Sign Monitoring
- Network Traffic and Congestion Control
- ECG Monitoring and Analysis
- Network Security and Intrusion Detection
- Wireless Body Area Networks
- Energy Efficient Wireless Sensor Networks
- Bluetooth and Wireless Communication Technologies
- Advanced Frequency and Time Standards
- Advanced Sensor and Energy Harvesting Materials
- Internet Traffic Analysis and Secure E-voting
- Sensor Technology and Measurement Systems
- Indoor and Outdoor Localization Technologies
- Anomaly Detection Techniques and Applications
- Power System Optimization and Stability
- Real-Time Systems Scheduling
- Advanced Memory and Neural Computing
- Neuroscience and Neural Engineering
- Petri Nets in System Modeling
- Power Line Communications and Noise
- Distributed systems and fault tolerance
- Heart Rate Variability and Autonomic Control
- Hemodynamic Monitoring and Therapy
- Traffic Prediction and Management Techniques
- Advancements in PLL and VCO Technologies
University of Padua
2016-2025
OHB (Germany)
2023
University of Catania
2020
Institute of Electrical and Electronics Engineers
2020
Istituto Nazionale di Fisica Nucleare, Sezione di Padova
2008
University of Pavia
1992
Performances in network-based synchronization depend on several related factors, including the instability of local clocks, rate at which timing information is exchanged, and accuracy resulting correction estimates. This paper analyzes these effects their relationships, showing how may affect design an IEEE 1588 Precision Time Protocol scheme. introduces a state-variable clock model for realistic parameters can be obtained different kinds clocks from experimental measurements Allan variance...
To effectively manage the growing number of distributed energy resources, more extensive monitoring is needed at distribution network levels, where a challenging combination constraints and cost-effectiveness requirements must be taken into account. In this paper, we consider idea combining accurate phasor measurement with capability to analyze harmonic interharmonic phasors. This creates need deal multiple components having different amplitudes, including interharmonics unknown frequency...
Monitoring of health parameters during physical exercise is an important aspect both sports and rehabilitation medicine. Photoplethysmography (PPG) routinely employed for low-cost heart rate (HR) measurement; however, monitoring made difficult by the presence motion artifacts. In this paper, we present approach that combines denoising subspace decomposition Fourier-based HR measurement, finally, smoothing tracking a Kalman filter. Using publicly available real-life PPG traces, demonstrate...
Sleep posture is a key factor in assessing sleep quality, especially for individuals with Obstructive Apnea (OSA), where the sleeping position directly affects breathing patterns: side alleviates symptoms, while supine exacerbates them. Accurate detection of essential and improving quality. Automatic systems, both wearable non-wearable, have been developed to assess However, solutions can be intrusive affect sleep, non-wearable such as camera-based approaches pressure sensor arrays, often...
Wireless body sensor networks (WBSNs) represent an enabling technology for unobtrusive patient monitoring. Unlike wireless (WSNs), they are characterized by relatively few and heterogeneous sensors placed in, on, or around the human body. An important issue consists in designing efficient solutions optimizing network resource usage, such as computational capacity, energy, bandwidth. Compression algorithms WBSNs need to satisfy more stringent requirements than typical WSNs. In particular,...
The distribution of a time reference has long been significant research topic in measurement and different solutions have proposed over the years. In this context, design servo clocks plays an important role to get better performances by smoothing influence noise sources affecting synchronization system. A clock is asked provide adaptive conservative measure distance between local minimizing, if possible, energy consumption. paper, we propose based on efficient implementation Kalman filter...
This paper analyzes the effects on synchronization performances of accuracy skew and offset estimates, short long-term stability unregulated clock, rate at which timing information is exchanged within network. The work makes use a simulated clock based state-variable model, for realistic parameters are obtained from experimental measurements Allan variance plots different kinds clocks.
Analysis and monitoring of traffic measurements can provide a useful tool for diagnostics, troubleshooting, performance analysis in networks. This paper presents method based on the theory extreme values. Numerical time series obtained from are processed to compute statistical indicators analyze them detect significant local features, which may point some critical network behavior.
In this paper, the WirelessHART communication scheme is investigated. The protocol at first described, in order to underline key aspects of its design; then, a simulation tool presented: it enables analysis that accounts for both and physical layers issues. particular, interference effects on choices can be easily analyzed. experimental results, obtained from simulations, highlight improvements with respect IEEE 802.15.4 standard, concerning Packet Error Ratio (PER) degradation interfering networks.
Photoplethysmography (PPG) is a widely used technology, routinely employed for heart rate measurement in low-cost medical devices. Monitoring notoriously more difficult during physical exercise, since motion artifacts may considerably degrade PPG signals. The approach discussed this paper estimates human and reliably tracks its charges by robust algorithm, whose main steps include denoising joint principal component analysis, Fourier-based and, finally, smoothing tracking Kalman filter. To...
The term "Internet of Things" (IoT) was first used in 2009 by Kevin Ashton to refer networks physical devices with the capability acquire data and forward them a concentrator for processing. In last decade, IoT systems have provided effective valuable solutions monitoring control variety fields such as transportation, smart agriculture, cities health, discussed here.
In the last years, increasing interest has been addressed on wearable devices for continuous monitoring of biochemical profiles patients and athletes. Among various markers, lactate represents one most interesting to deepen knowledge fatigue processes, in combination with traditional electromyographic features. this work, we propose a new, low-cost, rapid, flexible electrochemical amperometric carbon biosensor fabricated by novel technique aerosol jet printing (AJP). The developed biosensors...
In the paper we present a behavioral simulation of PTP synchronization, based on OMNeT++ simulator. Node, link and traffic source behavior are represented by statistical flow models. This approach, which differs from most approaches to analysis, allows focus fundamental aspects analysis can be useful assess suitability synchronization in relation network architecture operating conditions, as well for optimization clock servo design.
Multi-channel measurements from the maternal abdomen acquired by means of dry electrodes can be employed to promote long-term monitoring fetal heart rate (fHR). The signals with this type electrode have a lower signal-to-noise ratio and different artifacts compared conventional wet electrodes. Therefore, starting benchmark algorithm best performance for fHR estimation proposed Varanini et al., we propose new method specifically designed remove typical dry-electrode recordings. To test...
Functional near-infrared spectroscopy (fNIRS) is a noninvasive and portable neuroimaging technique that uses NIR light to monitor cerebral activity by the so-called haemodynamic responses (HRs). The measurement challenging because of presence severe physiological noise, such as respiratory vasomotor waves. In this paper, novel for fNIRS signal denoising HR estimation described. method relies on joint application compressed sensing theory principles Taylor-Fourier modeling nonstationary...
Frequency synchronization of a distributed measurement system requires the transfer an accurate frequency reference to all nodes. The use general-purpose packet-based network for this aim is analyzed in paper, where oversampling considered as means counter effects packet delay variation on time accuracy. A comprehensive analysis that includes stability local clock presented and shows through kind feasible, with accuracy level can be interest number applications.
mHealth technology, by using habitual devices, i.e., smartphones, improves prevention, diagnosis, treatment, monitoring, and management of health. Monitoring heart profile during intense sports activities allows to diagnose pathologies, not identifiable with the traditional Holter approach and, therefore, it can help preventing possible injuries. On other hand, denoising extracting features from electrocardiographic (ECG) signal acquired physical activity is a challenging task due motion...
Dehydration is a frequent condition in the elderly and can lead to serious health complications if not compensated timely. Early diagnosis be problematic, as medical examinations hospital would needed. Fully wearable low-cost multi-sensing devices for home use could help investigate prevent critical conditions. We introduce sensing platform designed operation remote healthcare elderly. It combines low-cost, highly customizable flexible inkjet-printed multi-sensor bracelet, including sensors...
Human motion analysis is a task of increasing importance in several modern application fields, such as medicine, avionics, security, and disaster recovery. It requires the sophisticated measurement techniques based on micro-Doppler effect, human walking modeling, cinematic simulation, image processing measurements. In this paper, novel comprehensive approach proposed for detection motion. The combines theoretical concepts tools theory, processing, original way. attention primarily focused...
The World Health Organization assesses the number of visually impaired people to be nearly 285 million in August 2014, whom 39 are blind. One most important discomfort factors for these persons is known difficulty moving and orienting by themselves unfamiliar surroundings. Nowadays, several devices currently available supporting there everyday life. To this end, attention paper mainly focused on localization navigation indoor environment. solution adopted consists populating a database...
The paper presents a technique based on the use of single-variable Kalman filters (KFs) to track frequency variation signal components in multifrequency phasor analysis. KF-based tracking is employed for accurate estimation both harmonic and inter-harmonic Compressive Sensing Taylor Fourier Multifrequency (CSTFM) algorithm. This novel approach improves robustness CSTFM method effects spectral interference among interharmonic components, allowing better estimates each component extending...
The I-READ 4.0 project represents an integrated and autonomous Cyber Physical System, for automatic management of very large warehouses with high-stock rotation index. Thanks to internet UHF-RFID readers, both fixed mobile, it is possible implement efficient assets forklifts operating in indoor scenario. proposed solution can be employed independently on the warehouse sizes, good types spatial resolution required item localization by virtue its low-cost, reconfigurability scalability. system...
The article proposes the development of an innovative prototype smart orthosis with a fully integrated multi-electrodes matrix for electromyography (EMG), to improve non-invasive personalized recording during rehabilitation. Both electrodes and conductive tracks were effectively printed onto three-dimensional (3D) surface through Aerosol Jet Printing. Results from morphological electrical characterization elements showed average thickness 22.2 μm (relative standard deviation 11%) resistivity...
The availability of low-cost plug-and-play devices may contribute to the diffusion methods and technologies for personalized monitoring physiological parameters by wearable devices. This paper is focused on biosensors, which represent an interesting enabling technology real-time continuous acquisition biological or chemical analytes physio-pathological interest, e.g., metabolites, protein biomarkers, electrolytes in biofluids. Currently available commercial biosensors are usually referred as...
Network time distribution relies on timestamping, which is employed by local nodes to assign a value incoming timing packets. Clearly, any error affecting the timestamp has direct impact final synchronization accuracy of system. In wireless sensor networks (WSNs), impairments physical layer are primary cause such timestamping errors, and it would be advantageous flag suspect values before feeding them into algorithm. This paper discusses new strategy for validating timestamps in WSN based...