Radiated susceptibility of breath monitoring system based on UWB pulses in spacecraft modules

Russo, Paola; Primiani, Valter Mariani; Leo, Alfredo De; Cerri, G.

doi:10.1109/emceurope.2012.6396884

Cited by 4 publications

(3 citation statements)

References 4 publications

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“…This may seem a strong assumption. Actually, some tests have been carried out to check its reliability: our simulations show that the time domain response does not differ significantly in the two cases of lossy biologic tissues or perfectly conductor material in the first 10 ns [ 56 ] which are enough to collect the single measurement, via a proper range gating. Not shown in the figure, the UWB Vivaldi antenna is placed in front of the subject chest.…”

Section: Application To the Space Environmentmentioning

confidence: 99%

Non-Invasive UWB Sensing of Astronauts’ Breathing Activity

Baldi

Cerri

Chiaraluce

et al. 2014

Sensors

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The use of a UWB system for sensing breathing activity of astronauts must account for many critical issues specific to the space environment. The aim of this paper is twofold. The first concerns the definition of design constraints about the pulse amplitude and waveform to transmit, as well as the immunity requirements of the receiver. The second issue concerns the assessment of the procedures and the characteristics of the algorithms to use for signal processing to retrieve the breathing frequency and respiration waveform. The algorithm has to work correctly in the presence of surrounding electromagnetic noise due to other sources in the environment. The highly reflecting walls increase the difficulty of the problem and the hostile scenario has to be accurately characterized. Examples of signal processing techniques able to recover breathing frequency in significant and realistic situations are shown and discussed.

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Section: Application To the Space Environmentmentioning

confidence: 99%

Non-Invasive UWB Sensing of Astronauts’ Breathing Activity

Baldi

Cerri

Chiaraluce

et al. 2014

Sensors

Self Cite

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“…A different choice was offered by the capability of UWB radar pulses to pass through obstacles, due to their high resolution, low energy consumption, and immunity against multipath interference: these features were also exploited to extract human vital signs in complex environments [14][15][16], including space scenarios [17,18]. Specific UWB radar systems [19][20][21][22] were designed for the rescue of victims trapped in rubble.…”

Section: Introductionmentioning

confidence: 99%

An EM Modeling for Rescue System Design of Buried People

Leo

Petrini

Russo

et al. 2015

International Journal of Antennas and Propagation

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The development of a rescue system for buried persons is a subject of growing importance in case of occurrence of natural disasters such as earthquake, landslides, or avalanches. In this paper a fully analytical model has been developed to get some fundamental a priori design characteristics. The proposed system is based on the detection of the victim movements due to its respiratory activity: in particular, when an electromagnetic (EM) wave impinges on a human body, the analysis of the reflected wave parameters such as amplitude, frequency, phase, or delay time allows for the detection of the breathing frequency. The model is simple on purpose because the great uncertainty concerning the characterization of many environmental parameters of a general situation makes a very detailed model useless. However, it is accurate enough to provide useful information about system design, filling the gap in the literature concerning the electromagnetic formulation of such kinds of problems. A system prototype was built using laboratory equipment to experimentally validate the model, and subsequently breathing frequency measurements were carried on, both in a lossless laboratory environment and in a lossy realistic scenario.

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“…Due to the particular applications of UWB radar in medicine, crucial points to investigate are the assessment of the UWB radar radiated field and the study of the compliance with safety guidelines. To this end, since the foreseen applications of the UWB radar are both on ground and inside a spatial environment, the maximum value of the radiated field used in this study will be settled considering the emission masks of the Federal Communications Commission (FCC) [5], defined on imaging systems, and of the space environment [6], referring to the electromagnetic compatibility of the electronic apparatuses [7].…”

Section: Introductionmentioning

confidence: 99%

Safety Aspects of People Exposed to Ultra Wideband Radar Fields

Cavagnaro

Pisa

Pittella

2013

International Journal of Antennas and Propagation

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The safety aspects of people exposed to the field emitted by ultra wideband (UWB) radar, operating both in the spatial environment and on ground, for breath activity monitoring are analyzed. The basic restrictions and reference levels reported in the ICNIRP safety guideline are considered, and the compliance of electromagnetic fields radiated by a UWB radar with these limits is evaluated. First, simplified analytical approaches are used; then, both a 3-dimensional multilayered body model and an anatomical model of the head have been used to better evaluate the electromagnetic absorption when a UWB antenna is placed in front of the head. The obtained results show that if the field emitted by the UWB radar is compliant with spatial and/or ground emission masks, then both reference levels and basic restrictions are largely satisfied.

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Radiated susceptibility of breath monitoring system based on UWB pulses in spacecraft modules

Cited by 4 publications

References 4 publications

Non-Invasive UWB Sensing of Astronauts’ Breathing Activity

Non-Invasive UWB Sensing of Astronauts’ Breathing Activity

An EM Modeling for Rescue System Design of Buried People

Safety Aspects of People Exposed to Ultra Wideband Radar Fields

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