Search results for "embedded system"

Measurements of cardiac Pre-Ejection period using a combo PPG-ECG system

2015

The extraction of biomedical parameters, for early disease detection, is assuming today an ever increasing and fundamental importance. In particular, in the cardiologic field, the preejection period (PEP) is the duration of the iso-volumetric left ventricle contraction until the aortic valve opening. This parameter is a non-constant additive delay, which rapidly changes in response to stress, emotion and physical effort. To estimate this period, several wearable electronics devices have been developed in literature, and among them the Impedance Cardiogram equipment is the most used. However, these systems are often expensive and bulky. In this paper, we propose a cost-effective and easy to …

Design and development of a continuous wave functional near infrared spectroscopy system

2014

Functional Near InfraRed Spectroscopy uses light sources and optical detectors for human brain monitoring. In this paper, a portable, low cost, battery-operated, multi-channel, continuous wave fNIRS embedded system, hosting up to 64 LED sources and 128 Silicon PhotoMultiplier optical detectors, is reported on. The designed system is based on a scalable architecture, in which each probe consists of 8 modular and flexible stands, able to host 4 bi-color LEDs as light sources, 16 silicon photomultipliers as photodetectors and a temperature sensor. The hardware structure allows to easily set up several relevant parameters: the timing of the LEDs, the optical power emitted by the LEDs; the acqui…

Design of a Multichannel Continuous Wave fNIRS System implemented with SiPM

2013

Development of a CW-fNIRS System for brain monitoring

2014

Blood Pressure Monitoring with a PPG Embedded System

2014

Progettazione e realizzazione di un sistema Continuous Wave fNIRS basato su tecnologia SiPM

2014

Progettazione e realizzazione di un sistema Continuous Wave fNIRS basato su tecnologia SiPM

Optical techniques represent a suitable tool for in vivo and non-invasive diagnosis of human brain and tissues. Functional Near InfraRed Spectroscopy (fNIRS) is revealing as an emerging neuroimaging technology, since it is safe, relatively inexpensive and little cumbersome. fNIRS relies on the measurement of the oxygen concentration in the blood by means of light beams impinging on the tissues under test. Haemoglobin concentration variations (oxygenated/deoxygenated) can provide very important information on brain activity and allow to discriminate the main brain area involved during tests. Herein, we present the design and development of an innovative solution for a portable continuous wav…

Ierīču barošanas kontrollera programmatūras izstrāde

2015

Barošanas kontrolleris ir autonoma sistēma, kas kontrolē pieslēgto ierīču, strāvas padevi un saglabā datus par ierīču stāvokli. Priekš paplašinātas funkcionalitātes ir paredzēts, ka lietotājs var savienot ierīces ar Barošanas kontrolleri caur Ethernet tīklu. Lietotājam tiek dotas 3 iespējas vadīt sistēmu: pieslēdzoties caur pārlūkprogrammu sistēmai un izmantojot tīmekļa pārlūka interfeisu, izmantojot mazākas funkcionalitātes skārienjūtīgo ekrānu, kas pieslēgts sistēmai, izmantojot tiešo pieeju pie ierīces kā piemēram: ssh, ftp utt, lai mainītu sistēmas noklusētos iestatījumus.

Emulating the Effects of Radiation-Induced Soft-Errors for the Reliability Assessment of Neural Networks

2021

International audience; Convolutional Neural Networks (CNNs) are currently one of the most widely used predictive models in machine learning. Recent studies have demonstrated that hardware faults induced by radiation fields, including cosmic rays, may significantly impact the CNN inference leading to wrong predictions. Therefore, ensuring the reliability of CNNs is crucial, especially for safety-critical systems. In the literature, several works propose reliability assessments of CNNs mainly based on statistically injected faults. This work presents a software emulator capable of injecting real faults retrieved from radiation tests. Specifically, from the device characterisation of a DRAM m…

Multi-agent control architecture for RFID cyberphysical robotic systems initial validation of tagged objects detection and identification using Playe…

2016

International audience; The objective of this paper is to describe and validate a multi-agent architecture proposed to control RFID Cyber-Physical Robotic Systems. This environment may contain human operators, robots (mobiles, manipulators, mobile manipulators, etc.), places (workrooms, walls, etc.) and other objects (tables, chairs, etc.). The proposed control architecture is composed of two types of agents dispatched on two levels. We find at the Organization level a Supervisory agent to allow operators to configure, manage and interact with the overall control system. At the Control level, we distinguish the Robots agents, to each robot (mobiles, manipulators or mobile manipulators) is a…