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About

About

ROGÉRIO DIONISIO received his PhD in Electrical Engineering from University of Aveiro, Portugal, in 2014. Since 1999 he is a Professor at the Polytechnic Institute of Castelo Branco. He participates in several national and European research projects on optical communications, wireless communications and networks of excellence. He is author of several journal and conference publications. His main research interest are wireless sensor networks, advanced signal processing, radio spectral coexistence analysis and cognitive radio systems. He served as a reconfigurable radio system expert to the European Commission. He is currently associate member of DiSAC R&D unit and a researcher at INESC-TEC.

Interest
Topics
Details

Details

  • Name

    Rogério Pais Dionísio
  • Role

    External Research Collaborator
  • Since

    18th October 2020
Publications

2023

Radio Interference of Wireless Networks and the Impact of AR/VR Applications in Industrial Environments

Authors
Dionisio, R; Ribeiro, F; Metrolho, J;

Publication
ELECTRONICS

Abstract
The use of wireless communications systems on the factory shop floor is becoming an appealing solution with many advantages compared to cable-based solutions, including low cost, easy deployment, and flexibility. This, combined with the continuous growth of low-cost mobile devices, creates opportunities to develop innovative and powerful applications that, in many cases, rely on computing and memory-intensive algorithms and low-latency requirements. However, as the density of connected wireless devices increases, the spectral noise density rises, and, consequently, the radio interference between radio devices increase. In this paper, we discuss how the density of AR/VR mobile applications with high throughput and low latency affect industrial environments where other wireless devices use the same frequency channel. We also discuss how the growing number of these applications may have an impact on the radio interference of wireless networks. We present an agnostic methodology to assess the radio interferences between wireless communication systems on the factory floor by using appropriate radio and system models. Several interference scenarios are simulated between commonly used radio systems: Bluetooth, Wi-Fi, and WirelessHART, using SEAMCAT. For a 1% probability of interference and considering a criterion of C/I = 14 dB, the simulations on an 80 m x 80 m factory shop floor show that low-bandwidth systems, such as Bluetooth and WirelessHART, can coexist with high-bandwidth and low-latency AR/VR applications running on Wi-Fi mobile terminals if the number of 11 Wi-Fi access points and 80 mobile AR/VR devices transmitting simultaneously is not exceeded.

2023

PoPu-Data: A Multilayered, Simultaneously Collected Lying Position Dataset

Authors
Fonseca, L; Ribeiro, F; Metrolho, J; Santos, A; Dionisio, R; Amini, MM; Silva, AF; Heravi, AR; Sheikholeslami, DF; Fidalgo, F; Rodrigues, FB; Santos, O; Coelho, P; Aemmi, SS;

Publication
DATA

Abstract
This study presents a dataset containing three layers of data that are useful for body position classification and all uses related to it. The PoPu dataset contains simultaneously collected data from two different sensor sheets-one placed over and one placed under a mattress; furthermore, a segmentation data layer was added where different body parts are identified using the pressure data from the sensors over the mattress. The data included were gathered from 60 healthy volunteers distributed among the different gathered characteristics: namely sex, weight, and height. This dataset can be used for position classification, assessing the viability of sensors placed under a mattress, and in applications regarding bedded or lying people or sleep related disorders. Dataset The dataset is available on GitHub: https://github.com/rdionisio1403/PoPu/. Dataset License The dataset is available under Creative Commons (CC0).

2023

INNOVATION AND KNOWLEDGE TRANSFER FOR MONITORING, PREDICTING AND PREVENTING PRESSURE ULCERS: THE SENSOMATT APPROACH

Authors
Silva, A; Santos, O; Reinaldo, F; Fidalgo, F; Metrôlho, J; Amini, M; Fonseca, L; Dionísio, R;

Publication
PROCEEDINGS OF THE 5TH INTERNATIONAL CONFERENCE ON PRODUCTION ECONOMICS AND PROJECT EVALUATION, ICOPEV 2022

Abstract
Pressure ulcers are skin injuries that develop mainly over bony areas as the result of prolonged pressure caused by the immobility of bedridden patients. They constitute not only a source of additional suffering for these patients but also contribute to the burnout of healthcare professionals who must maintain continuous monitoring of these patients. Data from countries such as the UK or the USA allows the cost of this problem to be estimated to be, respectively, near 2 pound billion and $80 billion. In this article, we describe the SensoMatt approach to pressure ulcer prevention and management, which is being developed as a research project that includes partners from industry, healthcare, and academia. The SensoMatt solution is centered on a pressure sheet that is placed under the patient's mattress, complemented by an online management portal and a mobile app. These provide patients and healthcare providers with an unparalleled set of services that include personalized analysis, prevention warnings and recommendations.

2023

IOT AND CLOUD-BASED TECHNOLOGIES FOR EFFICIENT USE OF RESOURCES IN ALMONDS CROP THE VERATECH PROJECT

Authors
Metrôlho, J; Reinaldo, F; Oliveira, A; Dionísio, R; Fidalgo, F; Santos, O; Candeias, A; Serpa, R; Rodrigues, P; Rebelo, J;

Publication
PROCEEDINGS OF THE 5TH INTERNATIONAL CONFERENCE ON PRODUCTION ECONOMICS AND PROJECT EVALUATION, ICOPEV 2022

Abstract
Efficient use of resources is a critical factor in almond crops. Technological solutions can significantly contribute to this purpose. The VeraTech project aims to explore the integration of sensors and cloud-based technologies in almond crops for efficient use of resources and reduction of environmental impact. It also makes available a set of relevant and impactful performance indicators in agricultural activity, which promote productivity gains supported by efficient use of resources. The proposed solution includes a sensor network in the almond crops, the transmission of data and its integration in the cloud, making this data available to be consumed, processed, and presented in the monitoring and alerts dashboard. In the current state of the development, several data are collected by sensors, transmitted over LoRaWAN, integrated using AWS IoT Core, and monitored and analysed through a cloud business analytics service. This project is implemented on a farm located in the Beira-Baixa region of Portugal and involves a partnership between Vera Cruz (owner of the farm), Veratech, and the Polytechnic Institute of Castelo Branco.

2023

A Novel Elastic Sensor Sheet for Pressure Injury Monitoring: Design, Integration, and Performance Analysis

Authors
Amini, MM; Devin, MGF; Alves, P; Sheikholeslami, DF; Hariri, F; Dionisio, R; Faghihi, M; Reinaldo, F; Metrolho, JC; Fonseca, L;

Publication
ELECTRONICS

Abstract
This study presents the SENSOMATT sensor sheet, a novel, non-invasive pressure monitoring technology intended for placement beneath a mattress. The development and design process of the sheet, which includes a novel sensor arrangement, material selection, and incorporation of an elastic rubber sheet, is investigated in depth. Highlighted features include the ability to adjust to varied mattress sizes and the incorporation of AI technology for pressure mapping. A comparison with conventional piezoelectric contact sensor sheets demonstrates the better accuracy of the SENSOMATT sensor for monitoring pressures beneath a mattress. The report highlights the sensor network's cost-effectiveness, durability, and enhanced data measurement, alongside the problems experienced in its design. Evaluations of performance under diverse settings contribute to a full understanding of its potential pressure injury prediction and patient care applications. Proposed future paths for the SENSOMATT sensor sheet include clinical validation, more cost and performance improvement, wireless connection possibilities, and improved long-term monitoring data analysis. The study concludes that the SENSOMATT sensor sheet has the potential to transform pressure injury prevention techniques in healthcare.