References of "Beauvois, Véronique"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailJamming Signal Immunity Tests on GSM-R Communications Compared to EMC Basic Standards
Beauvois, Véronique ULg; Fontana, Michele; Canavero, Flavio et al

Conference (2014, July 29)

This paper presents the work being done in SECRET project (European Program FP7/2007-2013 under grant agreement number “285136”) to strengthen the European rail network against the potential jamming of ... [more ▼]

This paper presents the work being done in SECRET project (European Program FP7/2007-2013 under grant agreement number “285136”) to strengthen the European rail network against the potential jamming of the railway communications. Standardized immunity tests, currently conducted on communication equipment in the presence of electromagnetic (EM) interferences are presented. It then presents the tests carried out in SECRET to assess the resistance of railway communication systems face the signals generated by telecommunication jammers. [less ▲]

Detailed reference viewed: 12 (3 ULg)
Full Text
Peer Reviewed
See detailModelling Time Reversal Applications in a Reverberation Chamber using the Current Image Method
Spirlet, Maxime; Broun, Valery; Camus, Philippe et al

Conference (2013, September)

In this paper, we present a numerical model to analyze Time Reversal applications in a reverberation chamber using the current image method. The principles behind this numerical model are presented in the ... [more ▼]

In this paper, we present a numerical model to analyze Time Reversal applications in a reverberation chamber using the current image method. The principles behind this numerical model are presented in the first part of the paper. The major advantage of this reverberation chamber model is that it requires a lot less computing time than usual solvers with qualitatively satisfying results. Next, an extension of our method to model Time Reversal Mirrors in reverberating cavities is described. Finally, two examples of Time Reversal refocusing using Time Reversal Mirrors of one or several elements are presented for illustration. [less ▲]

Detailed reference viewed: 56 (6 ULg)
Full Text
Peer Reviewed
See detailMan-Made Noise in Our Living Environments
Leferink, Frank; Silva, Ferran; Catrysse, Johan et al

in Radio Science Bulletin (2010), 334

The ITU’s (International Telecommunication Union’s) man-made noise levels are based on measurements performed in the 1970s. Some measurements have been carried out since then, showing that noise caused by ... [more ▼]

The ITU’s (International Telecommunication Union’s) man-made noise levels are based on measurements performed in the 1970s. Some measurements have been carried out since then, showing that noise caused by automotive ignition systems has been reduced, but manmade noise in business areas and city centers increased, especially due to the widespread use of electronic systems. The interference scenario also changed, from analog communication systems in relatively free-space conditions, to digital systems in living areas, often semi-enclosed such as offi ces, industrial production plants, and even inside cars and trains. Several measurements have therefore been carried out to estimate the level of man-made noise in these semi-enclosed environments. [less ▲]

Detailed reference viewed: 50 (6 ULg)
Full Text
Peer Reviewed
See detailEffets sur les êtres humains des champs électromagnétiques à très basse fréquence
Lilien, Jean-Louis ULg; Dular, Patrick ULg; V Sabariego, Ruth ULg et al

in REE : Revue de l'Electricité et de l'Electronique (2010), 5

Depuis le début des années 70, le risque potentiel sur la santé lié à l’exposition aux champs électromagnétiques dit à extrêmement basse fréquence a été largement abordé par la littérature scientifique ... [more ▼]

Depuis le début des années 70, le risque potentiel sur la santé lié à l’exposition aux champs électromagnétiques dit à extrêmement basse fréquence a été largement abordé par la littérature scientifique (plus de 1000 références répertoriées par l’OMS (WHO, 2007). Après plus de trente années de recherches au niveau mondial, il ressort principalement des études épidémiologiques une augmentation possible et modeste de l’accroissement du risque (d’un facteur 2) de la leucémie infantile en cas d’exposition répétée à un champ d’induction magnétique (B) supérieur à 0,4 T (micro-Tesla). Cependant cette observation n’a pu être confirmée par des études in vivo ou in vitro : aucun mécanisme biologique pathogène plausible n’a pu être mis à jour. La Commission Internationale pour la Protection contre les Radiations Non-Ionisantes (ICNIRP) recommande à ce jour des seuils, pour le grand public, situés à 100 T (champ d’induction magnétique B à 50 Hz) et 5 kV/m (champ électrique E à 50 Hz). Dans ce document nous présentons d’abord une revue des valeurs typiques de champs à 50 Hz auxquels nous sommes exposés, suivi d’un résumé de la littérature liant leucémie infantile et champs électromagnétiques à extrêmement basse fréquence (ELF). L’effet carcinogène potentiel sera lié à un seuil de perturbation électrique au niveau de la cellule. Nous nous intéresserons de près à la réponse de la moelle osseuse aux champs ELF. Dans ce but, nous ciblons le potentiel transmembranaire et l’impact sur celui-ci du champ électrique interne au corps. Ce papier est divisé en trois parties : (1) les interactions électriques entre les champs ELF ambiants et le corps humain de manière qualitative et quantitative. Différentes sources de champ électrique interne sont classifiées avec leur risque. (2) Parmi ces sources, nous détaillerons l’hypothèse des courants de contact ; (3) enfin quelques actions sont proposées pour les installations privées, de manière à annihiler la source potentielle majeure des effets des champs ELF. [less ▲]

Detailed reference viewed: 174 (55 ULg)
Full Text
Peer Reviewed
See detailEffects of extremely low frequency electromagnetic fields (ELF) on human beings
Lilien, Jean-Louis ULg; Dular, Patrick ULg; V Sabariego, Ruth ULg et al

in International Colloquium on Power frequency electromagnetic fields ELF EMF, Sarajevo, Bosnia and Herzegovina (2009)

A rough overview of typical values of ELF fields will be presented followed by a brief literature survey on childhood leukaemia and ELF. The potential carcinogenic effect of ELF would be linked to ... [more ▼]

A rough overview of typical values of ELF fields will be presented followed by a brief literature survey on childhood leukaemia and ELF. The potential carcinogenic effect of ELF would be linked to electrical disturbances in cell behaviour. The major concern linking childhood leukaemia and ELF is thus to determine the response of bone marrow cells under ELF fields. With that purpose, transmembrane potential will be targeted and linked to the E-field at that level. [less ▲]

Detailed reference viewed: 147 (17 ULg)
Full Text
Peer Reviewed
See detailModélisation numérique des courants et tensions de contact dans des habitations
Lorphèvre, Raoul; Dular, Patrick ULg; V Sabariego, Ruth ULg et al

in Actes de 6ème conférence européenne sur les méthodes numériques en électromagnétisme (NUMELEC 2008) (2008, December)

Un modèle d’installation électrique d’habitation avec une ligne à haute tension est développé avec la méthode "Partial Element Equivalent" (PEEC). Cette étude a pour but de déterminer l’existence des ... [more ▼]

Un modèle d’installation électrique d’habitation avec une ligne à haute tension est développé avec la méthode "Partial Element Equivalent" (PEEC). Cette étude a pour but de déterminer l’existence des courants et tensions induits dans une maison et d’évaluer leur amplitude. Ensuite, nous caractérisons l’influence d’un réseau d’habitations et du type de prise de terre sur ceux-ci. Cette partie du travail nous permet d’obtenir un ensemble de facteurs influençant le niveau des courants induits. Ce papier montre qu’il est possible de déterminer des configurations pour minimiser ces courants dans un réseau d’habitations. [less ▲]

Detailed reference viewed: 108 (22 ULg)
Full Text
Peer Reviewed
See detailEffects of extremely low frequency electromagnétic fields (ELF) on human beings. An electrical engineer viewpoint.
Lilien, Jean-Louis ULg; Dular, Patrick ULg; V Sabariego, Ruth ULg et al

in Revue d'électricité et d'électronique industrielle - tijdschrift voor elektriciteit en industriele elektronika (2008), 3

Since the early seventies, potential health risks from Extremely Low Frequency (ELF) exposure (50 Hz) have been extensively treated in the literature (more than 1000 references registered by WHO1, 2007 ... [more ▼]

Since the early seventies, potential health risks from Extremely Low Frequency (ELF) exposure (50 Hz) have been extensively treated in the literature (more than 1000 references registered by WHO1, 2007). After 30 years of worldwide research, the major epidemiological output is the possible moderate increased risk (by a factor 2) of childhood leukaemia in case of a long exposure to an ambient magnetic flux density (B-field) higher than 0.4 μT. However, this fact has not been confirmed by in vivo and/or in vitro studies. Moreover it has not been validated by any adverse health biological mechanisms neither for adults nor for children. Nobody knows precisely what happens inside the body and what could be a hazardous health effect of the ELF fields at 50 Hz. International recommendations (ICNIRP2) are currently, for general public, not to exceed a B-field of 100 μT (50 Hz) and an E-field of 5 kV/m (50 Hz). The authors are looking for a signal generated in the biological process under electric interactions. Herein, a rough overview of typical values of ELF fields will be presented followed by a brief literature survey on childhood leukaemia and ELF. The potential carcinogenic effect of ELF would be linked to electrical disturbances in cell behaviour. The major concern linking childhood leukaemia and ELF is thus to determine the response of bone marrow cells under ELF fields.With that purpose, transmembrane potential will be targeted and linked to the E-field at that level. This paper is three-folded: First, the electric interactions between ambient ELF fields and the body are studied both qualitatively and quantitatively. Though no adverse health field threshold is defined, a minimum field level is fixed in order to discriminate inherent random noise, in agreement with NIEHS3. This is based on the fact that mechanisms become only plausible under field exposure above a certain strength. Different sources of internal E-field are analysed and classified according to their potential risk. Second, the hypothesis of contact current is detailed. Finally, key actions to undertake are highlighted. Based on the current state of the art and some authors’ own developments, this paper proposes simple low cost modifications of private electrical installations in order to annihilate the major source of potential effects of ELF. Particular emphasis is paid to the situation in Belgium as the authors are part of the BBEMG (see end note) and perform numerous measurements in Belgian residential homes. [less ▲]

Detailed reference viewed: 144 (12 ULg)
Full Text
Peer Reviewed
See detailIn Situ Testing of Large Machines: Alternative Methods for Radiated Emission Measurements
Catrysse, Johan; Vanhee, Filip; Knockaert, Jos et al

Conference (2008, August)

On the legal aspect, the new European Directive on ElectroMagnetic Compatibility 2004/108/EC concerns also large machines. On a technical point of view, the special situation to characterise the EMC ... [more ▼]

On the legal aspect, the new European Directive on ElectroMagnetic Compatibility 2004/108/EC concerns also large machines. On a technical point of view, the special situation to characterise the EMC behaviour of large machines imply that current procedures are complex and very expensive, and in some cases even not possible. Adapted measuring methodologies and procedures are needed. As a response to this situation and within the European R&D Frameworks, the TEMCA2 project aimed to develop new and adapted methodologies for the assessment of EMC related to this type of industrial large machinery. [less ▲]

Detailed reference viewed: 60 (0 ULg)
Full Text
Peer Reviewed
See detailIn Situ Testing of Large Machines: Alternative Methods for Conducted Emission Measurements
Catrysse, Johan; Vanhee, Filip; Knockaert, Jos et al

Conference (2008, August)

On the legal aspect, the new European Directive on ElectroMagnetic Compatibility 2004/108/EC concerns also large machines. On a technical point of view, the special situation to characterise the EMC ... [more ▼]

On the legal aspect, the new European Directive on ElectroMagnetic Compatibility 2004/108/EC concerns also large machines. On a technical point of view, the special situation to characterise the EMC behaviour of large machines imply that current procedures are complex and very expensive, and in some cases even not possible. Adapted measuring methodologies and procedures are needed. As a response to this situation and within the European R&D Frameworks, the TEMCA2 project aimed to develop new and adapted methodologies for the assessment of EMC related to this type of industrial large machinery. [less ▲]

Detailed reference viewed: 51 (1 ULg)
Full Text
Peer Reviewed
See detailElectromagnetic compatibility analysis of unstructured mains networks for high-speed data transmission: Part 2
Battermann, Sven; Garbe, Heyno; Silva, Ferran et al

in IET Science, Measurement & Technology (2008), 2(3), 154-159

Different approaches are described for the characterisation of the low voltage mains network that is used for high-speed data transmission broadband over power line (BPL). Part 1 investigated the ... [more ▼]

Different approaches are described for the characterisation of the low voltage mains network that is used for high-speed data transmission broadband over power line (BPL). Part 1 investigated the disturbance scenario of these BPL devices and importance will be given to develop a new measurement procedure in Comite Internationale Special des Perturbations Radioelectrotechnique (CISPR) to estimate the high-frequency characteristics of AC mains networks. The improvements of the measurement method that can also be applied to other wire-based telecommunication systems will also be presented. Part 2 shows the definitions and comparisons of different symmetry factors. The transfer of the results on the compliance test for BPL devices will also be depicted. [less ▲]

Detailed reference viewed: 56 (0 ULg)
Full Text
Peer Reviewed
See detailElectromagnetic compatibility analysis of unstructured mains networks for high-speed data transmission: Part 1
Battermann, Sven; Garbe, Heyno; Silva, Ferran et al

in IET Science, Measurement & Technology (2008), 2(3), 146-153

Different approaches for the characterisation of relevant parameters of the low-voltage mains network, used for high-speed data transmission (BPL, broadband over power line) are described. Part 1 of the ... [more ▼]

Different approaches for the characterisation of relevant parameters of the low-voltage mains network, used for high-speed data transmission (BPL, broadband over power line) are described. Part 1 of the paper depicts the disturbance scenario of these BPL devices and the motivation will be given for the development of a new measurement procedure in CISPR for the estimation of the high-frequency characteristics of AC mains network. The improvements of the measurement method is not restricted to BPL applications, but can also be applied to other wire-based telecommunication systems. Part 2 of the paper shows the definitions and comparisons of different symmetry factors. The transfer of the results on the compliance test for BPL devices will be shown. [less ▲]

Detailed reference viewed: 48 (0 ULg)
Full Text
Peer Reviewed
See detailNear-field coupling of wireless devices and long communications cables
Christopoulos, Christos; Zhang, Yinghong ULg; Paul, J. et al

in IET Science, Measurement & Technology (2008), 2(1), 18-24

A comprehensive investigation of the coupling between mobile devices and communication/control cables in several environments is described here. Both experimental and numerical results are shown and ... [more ▼]

A comprehensive investigation of the coupling between mobile devices and communication/control cables in several environments is described here. Both experimental and numerical results are shown and compared using a number of different methods in different laboratories. Results indicate a good level of agreement between the different approaches thus giving confidence that predictive studies based on simulation can give a good quantitative assessment of coupling. Moreover, the studies show that varying the configuration of the coupled systems does not significantly affects the maximum coupling thus making it possible to obtain a reasonable worst case estimate of coupling from a small number of generic studies. [less ▲]

Detailed reference viewed: 69 (7 ULg)
Full Text
See detailAlternative methodologies for the evaluation of the EMC-Behaviour of large machines
Catrysse, Johan; Vanhee, Filip; Knockaert, Jos et al

in Revue E tijdschrift (2007), (4), 16-28

On the legal aspect, the new European Directive on ElectroMagnetic Compatibility 2004/108/EC concerns also large machines. The conformity assessment procedure in that case should be clarified and which ... [more ▼]

On the legal aspect, the new European Directive on ElectroMagnetic Compatibility 2004/108/EC concerns also large machines. The conformity assessment procedure in that case should be clarified and which standards should be applied and how. On a technical point of view, the special situation to characterise the EMC behaviour of large machines implies that current procedures are complex and very expensive, and in some cases even not possible. Adapted measuring methodologies and procedures are needed. As a response to this situation and within the European R&D Frameworks, the TEMCA2 project aimed to develop new and adapted methodologies for the assessment of EMC related to this type of industrial large machinery. The present paper describes the legal aspect for large machines and shows the objectives and the results of the European TEMCA2 project. [less ▲]

Detailed reference viewed: 52 (1 ULg)
Full Text
See detailChamps électromagnétiques: les règles belges et européennes
Beauvois, Véronique ULg

in Les carnets du préventeur (2007)

En matière de champs électromagnétiques, la législation européenne et par conséquent la législation belge évoluent rapidement ces dernières années. Le monde industriel ne peut rester ignorant dans ce ... [more ▼]

En matière de champs électromagnétiques, la législation européenne et par conséquent la législation belge évoluent rapidement ces dernières années. Le monde industriel ne peut rester ignorant dans ce domaine et doit regarder quelles sont les conséquences de cette évolution sur la vie de l’entreprise et sur celle de ses travailleurs. C’est ce que nous proposons d’aborder au travers de deux directives européennes de 2004: l’une concerne les équipements électroniques au sens large et l’autre s’intéresse aux travailleurs eux-mêmes. [less ▲]

Detailed reference viewed: 50 (6 ULg)
Full Text
Peer Reviewed
See detailHypersensitivity to Electricity: The effect of the current waveform on the perception level
Mattivi, Brice; Beauvois, Véronique ULg; Dular, Patrick ULg et al

in Proceedings of the 4th Int Workshop on Biological Effects of Electromagnetic Fields (2006, October)

Hypersensitivity to electricity has been reported many times in the literature. From another point of view, numerous measurements have been performed on perception level. Even if it appears that part of ... [more ▼]

Hypersensitivity to electricity has been reported many times in the literature. From another point of view, numerous measurements have been performed on perception level. Even if it appears that part of the population has a lower perception level of current, there is no clear link with the so called “hypersensitivity to electricity” which is more related to declared physiological disorders in part of the population (sleeping problem, headache ...). Such declared hypersensitivity is currently not yet related to any biological parameter. Our research team is currently trying to determine a relationship between hypersensitive declared people and the perception level when injecting current in the low frequency range 50-1000 Hz. We have performed current perception tests with individuals under different conditions (different wave shapes, frequencies, influence of external electric field, male and female...) using a particular protocol and our own designed system for current injection. This paper will present our test system design (current injector, wave shape converter, safety aspects) and our first results based on both sine wave (different frequencies) and wide band signal. [less ▲]

Detailed reference viewed: 59 (10 ULg)
Full Text
Peer Reviewed
See detailA FETD Approach for the Modeling of Antennas
Geuzaine, Christophe ULg; Meys, B.; Beauvois, Véronique ULg et al

in IEEE Transactions on Magnetics (2000), 36(4), 892--896

Detailed reference viewed: 29 (3 ULg)
Peer Reviewed
See detailA FETD Approach for the Modeling of Antennas
Geuzaine, Christophe ULg; Meys, B.; Beauvois, Véronique ULg et al

in Proceedings of the 12th COMPUMAG Conference on the Computation of Electromagnetic Fields (1999)

Detailed reference viewed: 20 (2 ULg)