WO2007028902A1 - Antenna and radio communication system in the mechanical structure of a headset - Google Patents

Antenna and radio communication system in the mechanical structure of a headset Download PDF

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Publication number
WO2007028902A1
WO2007028902A1 PCT/FR2006/002064 FR2006002064W WO2007028902A1 WO 2007028902 A1 WO2007028902 A1 WO 2007028902A1 FR 2006002064 W FR2006002064 W FR 2006002064W WO 2007028902 A1 WO2007028902 A1 WO 2007028902A1
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WO
WIPO (PCT)
Prior art keywords
helmet
antenna
shell
integrated
radio frequency
Prior art date
Application number
PCT/FR2006/002064
Other languages
French (fr)
Inventor
Frank Przysiek
Jean-Marc David
Original Assignee
Newsteo Sas
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Newsteo Sas filed Critical Newsteo Sas
Publication of WO2007028902A1 publication Critical patent/WO2007028902A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/30—Mounting radio sets or communication systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/273—Adaptation for carrying or wearing by persons or animals
    • H01Q1/276—Adaptation for carrying or wearing by persons or animals for mounting on helmets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/40—Radiating elements coated with or embedded in protective material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect

Definitions

  • the present invention relates to a headset communicating by radio signals, for example a personal protective helmet that can be used in certain trades, such as in the army, firefighters or the building and public works, or for the practice of certain sports at risk.
  • a protective helmet of the type includes means enabling radio frequency communication including an antenna integrated into the helmet.
  • US patent application 2005/0017911 describes such a headset in which the antenna is formed by integrated circuit components which are embedded in the shell of the helmet.
  • integrated circuit components requires a relatively large connectivity to connect these components to integrated circuits with each other and with the various electronic devices for processing and controlling the signals from the components or transmitted to these components (microphone, speaker, control buttons ).
  • the present invention aims to provide an antenna integrated into the mechanical structure of a helmet and whose connectivity is particularly reduced, preferably by integrating all the electronics in this structure, while providing additional services to those of a device of the prior art.
  • the antenna of a helmet of the aforementioned type is formed by at least one antenna element which is integrated in the mechanical structure of the shell.
  • the antenna is particularly simple, for example, in the case of a helmet made of a composite material, the antenna can be formed by conductive elements and constituting the stratification of the shell. As a result, it does not require a complex connection. connecting a ground plane for example can be done at any point where the structural elements of the shell forming the plane extend, for example at any point of the lamination in the case of a helmet conductive composite material.
  • the integration of all the electronics in the shell thickness limits the external connections and the risks inherent to the use of the electronics. wires and connectors.
  • the antenna has the advantage of being able to extend over the entire surface of the helmet, for example over the entire composite structure.
  • FIG. 1 being a diagrammatic view of a helmet comprising a wire antenna is shown in perspective, seen from the side of the helmet;
  • FIG. 2 is a diagram showing the three-dimensional directional gain of the antenna illustrated in FIG.
  • Figure 3 is a schematic view of a helmet according to the present invention provided with an electronic radio frequency device.
  • an individual protective helmet 1 comprises a shell 2 which forms the mechanical protection structure and means allowing a radio frequency communication.
  • These communication means comprise an antenna 3 which is integrated into the shell 2 of the helmet 1.
  • the antenna 3 is integrated in the mechanical structure of the shell 2 and is formed by at least one antenna element 4 which is a component structural the shell 2.
  • Each antenna element 4 is made of an electrically conductive material.
  • the antenna 3 may be part of the lamination.
  • a shell 2 made by pressure injection of a material such as a resin or a plastic polymer, it may be formed of one (of several) antenna element (s) 4 embedded (s) of this material.
  • the antenna 3 is fully integrated with the mechanical structure of the helmet 2, it is particularly robust from a mechanical point of view (resistant to shocks and deformations, good resistance to temperature variations, and generally to the conditions external), discreet
  • Each antenna element 4 can be in the form of a wire, a tube or a band and possibly form a mesh.
  • the antenna may also be formed by a plate whose surface substantially corresponds to the surface of the shell 2, or by one or more conductive pads fed in a network and insulated from a conductive reference plane by a dielectric of constant thickness.
  • the antenna 3 may be formed of a surface or a plate having slots acting as antenna elements 4 dual of a wire excited in a free space. In the latter case, the feeding points will be placed on both sides . of the slot to achieve the desired sensitivity and tuning characteristics.
  • the antenna elements 4 may be any electrically conductive material, for example carbon wire (which participates in the mechanical structure of the lamination of the shell) or wire such as copper, iron alloy or aluminum (this wire can be coated with a highly insulating material).
  • the antenna 3 is formed of four son 4 whose length is equal to half the wavelength of the radio signal used.
  • Each wire 4 extends in the direction of the height 5 of the helmet 1 and is directed in a direction perpendicular to the height 5 of its own, the four directions being perpendicular to each other so that each wire 4 is oriented according to each of the four cardinal points.
  • the antenna 3 is formed of pellets 4, two of which are shown.
  • the antenna elements 4 can be connected together at different potentials, which makes it possible to reverse the polarity of the antenna 3, or in a network (in series or in parallel).
  • the helmet 1 also comprises an electronic radiofrequency device 10 to which the antenna 3 is connected.
  • the antenna 3 can be connected totally or in parts, and in one or more points of contact accessible to the intrados or extrados of the shell 2.
  • the electronic radiofrequency device 10 associated with the antenna 3 can be integrated to the mechanical structure of the helmet, for example, either in the shell 2 - like all the antenna elements, or in a free space arranged in the padding or the cap of the helmet.
  • the electronic elements are made on printed circuits of small surface that can be flexible and thus be integrated into the thickness of the shell 2.
  • the antenna 3 and the electronic radiofrequency device 10 are shaped so that a reception direction is preferred, which allows the headset 1 to be used as a directional search system, a loudspeaker device 11 giving then a sound signal growing when the energy received by the antenna 3 increases.
  • the antenna 3 and the electronic radiofrequency device 10 are shaped in the helmet 1 so that the preferred direction is fixed and corresponds to the direction of gaze 6.
  • the preferred direction can be obtained, particularly in the case of an antenna 3 having a single antenna element 4, by the shape of the antenna 3.
  • the preferred direction can also be obtained, in the case of an antenna 3 with several antenna elements 4, by the electronic device of FIG. radiofrequency 10 putting one (several) element (s) antenna 4 in connection so as to favor a particular direction.
  • the electronic radiofrequency device 10 may successively favor each antenna element 4 so as to vary the preferred angular sector.
  • the radio frequency electronic device preferably comprises guiding means for indicating to the wearer 12 of the helmet 1 the angular position of the radio transmitter: for example a light indicator 13 arranged in the direction of gaze 6 emitting a signal whose frequency and / or the intensity depends on the alignment of the direction of gaze 6 with the transmitter of the radio signal, or speakers 11 acting in the same way as the indicator light, or by sending a voice message indicating the angular sector currently favored by the electronic radio frequency device 10 - for example "right side".
  • guiding means for indicating to the wearer 12 of the helmet 1 the angular position of the radio transmitter for example a light indicator 13 arranged in the direction of gaze 6 emitting a signal whose frequency and / or the intensity depends on the alignment of the direction of gaze 6 with the transmitter of the radio signal, or speakers 11 acting in the same way as the indicator light, or by sending a voice message indicating the angular sector currently favored by the electronic radio frequency device 10 - for example "right side".
  • the antenna 3 and the radio frequency electronic device 10 are shaped so that an emission direction is preferred.
  • the radio frequency electronic device 10 can be configured so that the preferred direction is rotatable relative to the center of the helmet so that the alert signal at increased power periodically scans the entire periphery of the helmet, in the manner of a coastal lighthouse.
  • the antenna 3 and the electronic radiofrequency device 10 so that the emission is preferred in the basic plane which is the horizontal plane when the helmet 1 is worn by a standing user looking ahead. In case of a fall, the user is lying down, and thus the basic plane becomes vertical.
  • the antenna of FIG. 1 has a much smaller gain from a certain incidence (light zone 7), whereas under this level of incidence, whatever the angular sector, the gain is greater (dark zone 8). As a result, this antenna 3 favors the low incidence plane in which the dark zone 8 extends.
  • the electronic radio frequency device may include an accelerometer which, when the user is at a standstill, is able to function as an inclinometer by detecting the acceleration of gravity to a greater or lesser extent depending on the tilting of the helmet.
  • the electronic radiofrequency device 10 may advantageously comprise a level correction device 15 which makes it possible to correct the inclination of the helmet.
  • This feature is particularly interesting when communication is done with an optimization of the wave emission in a plane horizontal and allows a user who is in a lying position to emit optimally in the horizontal plane, the attitude correction device sending a signal to the electronic radio frequency device 10 so that the latter selects the antenna elements 4 adequate. It is also interesting in case of danger since the emission plan is constant whatever the orientation of the helmet, which allows to be able to emit signals signaling a danger which will be received by the receiver which will normally remain connected whatever the physical attitude of the helmet.
  • the radio-user interface 16 making it possible to adjust the transmission parameters such as the channel and the sound level can also be integrated into the helmet structure.
  • proximity sensors 16 of the capacitive or optical type, or shock sensors for example piezoelectric capable of responding to the movement or impact of a finger of the user on the surface of the helmet.
  • the energy source 17, 18 can also be integrated into the helmet 1.
  • rechargeable accumulators 17 can be molded into the rigid structure of the shell 2.
  • ultrafine rechargeable elements stack of batteries in layers or batteries mounted in parallel
  • flexible photovoltaic elements 18 embedded in the upper layers of the lamination of the shell 1 can provide additional energy.
  • an electromagnetic coupling coil is integrated in the mechanical structure of the helmet in order to recharge the removable or fixed energy storage elements, and adapted to cooperate with another coil of a charger.

Abstract

The invention concerns a headset (1) comprising a shell (2) and means allowing radio frequency communication among which one antenna integrated in the shell (2). The invention is characterized in that the antenna consists at least of one antenna element (4), each antenna element (4) being integrated in the mechanical structure of the shell (2) and constituting a structural element of the shell (2).

Description

ANTENNE ET SYSTEME DE COMMUNICATION RADIO DANS LA STRUCTURE ANTENNA AND RADIO COMMUNICATION SYSTEM IN THE STRUCTURE
MECANIQUE D'UN CASQUEMECHANICS OF A HELMET
La présente invention concerne un casque communicant par signaux radio, par exemple un casque de protection individuelle pouvant être utilisé dans certains métiers, comme dans l'armée, les pompiers ou le bâtiment et travaux publics, ou pour la pratique de certains sports à risques.The present invention relates to a headset communicating by radio signals, for example a personal protective helmet that can be used in certain trades, such as in the army, firefighters or the building and public works, or for the practice of certain sports at risk.
On connaît un casque de protection du type comprenant des moyens permettant une communication par radiofréquence dont une antenne intégrée dans le casque. La demande de brevet US 2005/0017911 décrit un tel casque dans lequel l'antenne est formée par des composants à circuits intégrés qui sont noyés dans la coque du casque. Or, l' utilisation des composants à circuits intégrés nécessite une connectique relativement importante permettant de relier ces composants à circuits intégrés entre eux et avec les différents organes électroniques permettant de traiter et de contrôler les signaux provenant des composants ou transmis vers ces composants (microphone, haut-parleur, boutons de commande...) .A protective helmet of the type is known that includes means enabling radio frequency communication including an antenna integrated into the helmet. US patent application 2005/0017911 describes such a headset in which the antenna is formed by integrated circuit components which are embedded in the shell of the helmet. However, the use of integrated circuit components requires a relatively large connectivity to connect these components to integrated circuits with each other and with the various electronic devices for processing and controlling the signals from the components or transmitted to these components (microphone, speaker, control buttons ...).
La présente invention vise à réaliser une antenne intégrée dans la structure mécanique d'un casque et dont la connectique est particulièrement réduite, de préférence par intégration de l'ensemble de l'électronique dans cette structure, tout en offrant des services supplémentaires à ceux d'un dispositif de l'art antérieur.The present invention aims to provide an antenna integrated into the mechanical structure of a helmet and whose connectivity is particularly reduced, preferably by integrating all the electronics in this structure, while providing additional services to those of a device of the prior art.
Selon l'invention, l'antenne d'un casque du type précité est formée par au moins un élément d' antenne qui est intégré à la structure mécanique de la coque. Ainsi, l'antenne est particulièrement simple, par exemple, dans le cas d'un casque fait en un matériau composite, l'antenne peut être formée par des éléments conducteurs et constituant la stratification de la coque. De ce fait, elle ne nécessite pas de connexion complexe, la connexion d' un plan de masse par exemple pouvant se faire en tout point où s'étendent les éléments structurels de la coque formant ce plan, par exemple en tout point de la stratification dans le cas d'un casque en matériau composite conducteur. De même l'intégration de toute l'électronique dans l'épaisseur de la coque (composants de traitement radiofréquence, composants d' interface utilisateur, sources d' énergie...) limite la connectique externe et les risques inhérents à l'utilisation de fils et connecteurs. De plus, l'antenne présente l'avantage de pouvoir s'étendre sur l'ensemble de la surface du casque, par exemple sur l'ensemble de la structure composite.According to the invention, the antenna of a helmet of the aforementioned type is formed by at least one antenna element which is integrated in the mechanical structure of the shell. Thus, the antenna is particularly simple, for example, in the case of a helmet made of a composite material, the antenna can be formed by conductive elements and constituting the stratification of the shell. As a result, it does not require a complex connection. connecting a ground plane for example can be done at any point where the structural elements of the shell forming the plane extend, for example at any point of the lamination in the case of a helmet conductive composite material. Similarly, the integration of all the electronics in the shell thickness (radio frequency treatment components, user interface components, energy sources, etc.) limits the external connections and the risks inherent to the use of the electronics. wires and connectors. In addition, the antenna has the advantage of being able to extend over the entire surface of the helmet, for example over the entire composite structure.
D'autres particularités et avantages de la présente invention apparaîtront dans la description du mode de réalisation donné à titre d'exemple et illustré par les dessins mis en annexe,Other features and advantages of the present invention will appear in the description of the embodiment given by way of example and illustrated by the attached drawings,
La figure 1 étant une vue schématique d'un casque comprenant une antenne filaire est représentée en perspective, vue de côté du casque, La figure 2 est un schéma représentant le gain directionnel en trois dimensions de l'antenne illustrée à la figure 1, etFIG. 1 being a diagrammatic view of a helmet comprising a wire antenna is shown in perspective, seen from the side of the helmet; FIG. 2 is a diagram showing the three-dimensional directional gain of the antenna illustrated in FIG.
La figure 3 est une vue schématique d'un casque conforme à la présente invention muni d'un dispositif électronique de radiofréquence.Figure 3 is a schematic view of a helmet according to the present invention provided with an electronic radio frequency device.
Comme on peut le voir à la figure 1, un casque de protection individuelle 1 comprend une coque 2 qui forme la structure de protection mécanique et des moyens permettant une communication par radiofréquence. Ces moyens de communication comprennent une antenne 3 qui est intégrée dans la coque 2 du casque 1. L'antenne 3 est intégrée à la structure mécanique de la coque 2 et elle est formée par au moins un élément d' antenne 4 qui est un élément structurel de la coque 2. Chaque élément d' antenne 4 est en un matériau électriquement conducteur.As can be seen in FIG. 1, an individual protective helmet 1 comprises a shell 2 which forms the mechanical protection structure and means allowing a radio frequency communication. These communication means comprise an antenna 3 which is integrated into the shell 2 of the helmet 1. The antenna 3 is integrated in the mechanical structure of the shell 2 and is formed by at least one antenna element 4 which is a component structural the shell 2. Each antenna element 4 is made of an electrically conductive material.
Ainsi, dans le cas d'une coque 2 en matériau composite, l'antenne 3 peut faire partie de la stratification. Dans le cas d'une coque 2 réalisée par injection sous pression d'un matériau tel qu'une résine ou un polymère plastique, elle peut être formée d'un (de plusieurs) élément (s) d'antenne 4 noyé (s) de ce matériau.Thus, in the case of a shell 2 of composite material, the antenna 3 may be part of the lamination. In the case of a shell 2 made by pressure injection of a material such as a resin or a plastic polymer, it may be formed of one (of several) antenna element (s) 4 embedded (s) of this material.
Du fait que l'antenne 3 est totalement intégrée à la structure mécanique du casque 2, elle est particulièrement robuste d'un point de vue mécanique (résistante aux chocs et aux déformations, bonne tenue aux variations de température, et de manière générale aux conditions extérieures) , discrèteBecause the antenna 3 is fully integrated with the mechanical structure of the helmet 2, it is particularly robust from a mechanical point of view (resistant to shocks and deformations, good resistance to temperature variations, and generally to the conditions external), discreet
(invisible) et non gênante pour le porteur du casque 1. Chaque élément d' antenne 4 peut se présenter sous forme de fil, de tube ou de bande et, éventuellement former un maillage. L'antenne peut également être formée par une plaque dont la surface correspond sensiblement à la surface de la coque 2, ou par une ou plusieurs pastilles conductrices alimentées en réseau et isolées d'un plan de référence conducteur par un diélectrique d'épaisseur constante. De plus, l'antenne 3 peut être formée d'une surface ou d'une plaque comportant des fentes jouant le rôle d'éléments d'antenne 4 de façon duale d'un fil excité dans un espace libre. Dans ce dernier cas, les points d'alimentation seront placés de part et d' autre . de la fente pour obtenir les caractéristiques de sensibilité et d'accord souhaités.(Invisible) and not a nuisance for the wearer of the helmet 1. Each antenna element 4 can be in the form of a wire, a tube or a band and possibly form a mesh. The antenna may also be formed by a plate whose surface substantially corresponds to the surface of the shell 2, or by one or more conductive pads fed in a network and insulated from a conductive reference plane by a dielectric of constant thickness. In addition, the antenna 3 may be formed of a surface or a plate having slots acting as antenna elements 4 dual of a wire excited in a free space. In the latter case, the feeding points will be placed on both sides . of the slot to achieve the desired sensitivity and tuning characteristics.
Les éléments d'antenne 4 peuvent être en tout matériau électriquement conducteur, par exemple en fil de carbone (qui participe à la structure mécanique de la stratification de la coque) ou en fil métallique tel que du cuivre, de l'alliage de fer ou d'aluminium (ce fil pouvant être revêtu d'un matériau fortement isolant) . Ainsi, dans l'exemple illustré à la figure 1, l'antenne 3 est formée de quatre fils 4 dont la longueur est égale à la moitié de la longueur d'onde du signal radio utilisé. Chaque fil 4 s'étend dans le sens de la hauteur 5 du casque 1 et est dirigé selon une direction perpendiculaire à la hauteur 5 qui lui est propre, les quatre directions étant perpendiculaires entre elles de sorte que chaque fil 4 est orienté selon chacun des quatre points cardinaux.The antenna elements 4 may be any electrically conductive material, for example carbon wire (which participates in the mechanical structure of the lamination of the shell) or wire such as copper, iron alloy or aluminum (this wire can be coated with a highly insulating material). Thus, in the example illustrated in Figure 1, the antenna 3 is formed of four son 4 whose length is equal to half the wavelength of the radio signal used. Each wire 4 extends in the direction of the height 5 of the helmet 1 and is directed in a direction perpendicular to the height 5 of its own, the four directions being perpendicular to each other so that each wire 4 is oriented according to each of the four cardinal points.
Dans l'exemple illustré à la figure 3, l'antenne 3 est formée de pastilles 4 dont deux sont représentées.In the example illustrated in Figure 3, the antenna 3 is formed of pellets 4, two of which are shown.
Dans le cas où l'antenne 3 est formée de plusieurs éléments d'antenne 4, les éléments d'antenne 4 peuvent être connectés ensemble à des potentiels différents, ce qui permet de pouvoir inverser la polarité de l'antenne 3, ou en réseau (en série ou en parallèle) .In the case where the antenna 3 is formed of several antenna elements 4, the antenna elements 4 can be connected together at different potentials, which makes it possible to reverse the polarity of the antenna 3, or in a network (in series or in parallel).
Le casque 1 comprend également un dispositif électronique de radiofréquence 10 auquel l'antenne 3 est reliée. L'antenne 3 peut y être reliée totalement ou par parties, et en un ou plusieurs points de contact accessibles à l'intrados ou l'extrados de la coque 2. Le dispositif électronique de radiofréquence 10 associé à l'antenne 3 peut être intégré à la structure mécanique du casque, par exemple, soit dans la coque 2 - comme tous les éléments d'antenne, soit dans un espace libre aménagé dans les rembourrages ou le calotin du casque. De préférence, les éléments électroniques sont réalisés sur des circuits imprimés de faible surface pouvant être souple et être ainsi intégrés dans l'épaisseur de la coque 2.The helmet 1 also comprises an electronic radiofrequency device 10 to which the antenna 3 is connected. The antenna 3 can be connected totally or in parts, and in one or more points of contact accessible to the intrados or extrados of the shell 2. The electronic radiofrequency device 10 associated with the antenna 3 can be integrated to the mechanical structure of the helmet, for example, either in the shell 2 - like all the antenna elements, or in a free space arranged in the padding or the cap of the helmet. Preferably, the electronic elements are made on printed circuits of small surface that can be flexible and thus be integrated into the thickness of the shell 2.
Il est possible que l'antenne 3 et le dispositif électronique de radiofréquence 10 soient conformés de sorte qu'une direction de réception soit privilégiée ce qui permet au casque 1 de pouvoir servir de système de recherche directionnelle, un dispositif de haut-parleur 11 donnant alors un signal sonore grandissant lorsque l'énergie reçue par l'antenne 3 augmente. De préférence, l'antenne 3 et du dispositif électronique de radiofréquence 10 sont conformés dans le casque 1 de sorte que la direction privilégiée soit fixe et corresponde à la direction du regard 6. La direction privilégie peut être obtenue, notamment dans le cas d'une antenne 3 ayant un seul élément d'antenne 4, par la forme de l'antenne 3. La direction privilégie peut également être obtenue, dans le cas d'une antenne 3 à plusieurs éléments d'antenne 4, par le dispositif électronique de radiofréquence 10 mettant un (plusieurs) élément (s) d' antenne 4 en connexion de façon à privilégier une direction particulière. De plus le dispositif électronique de radiofréquence 10 peut privilégier de façon successive chaque élément d' antenne 4 de façon à faire varier le secteur angulaire privilégié.It is possible for the antenna 3 and the electronic radiofrequency device 10 to be shaped so that a reception direction is preferred, which allows the headset 1 to be used as a directional search system, a loudspeaker device 11 giving then a sound signal growing when the energy received by the antenna 3 increases. Preferably, the antenna 3 and the electronic radiofrequency device 10 are shaped in the helmet 1 so that the preferred direction is fixed and corresponds to the direction of gaze 6. The preferred direction can be obtained, particularly in the case of an antenna 3 having a single antenna element 4, by the shape of the antenna 3. The preferred direction can also be obtained, in the case of an antenna 3 with several antenna elements 4, by the electronic device of FIG. radiofrequency 10 putting one (several) element (s) antenna 4 in connection so as to favor a particular direction. In addition, the electronic radiofrequency device 10 may successively favor each antenna element 4 so as to vary the preferred angular sector.
Le dispositif électronique de radiofréquence comprend de préférence des moyens de guidage permettant d' indiquer au porteur 12 du casque 1 la position angulaire de l'émetteur radio : par exemple un voyant lumineux 13 disposé dans la direction du regard 6 émettant un signal dont la fréquence et/ou l'intensité dépend de l'alignement de la direction du regard 6 avec l'émetteur du signal radio, ou des haut- parleurs 11 agissant soit de la même façon que le voyant lumineux, soit en émettant un message vocal indiquant le secteur angulaire actuellement privilégié par le dispositif électronique de radiofréquence 10 - par exemple « côté droit ».The radio frequency electronic device preferably comprises guiding means for indicating to the wearer 12 of the helmet 1 the angular position of the radio transmitter: for example a light indicator 13 arranged in the direction of gaze 6 emitting a signal whose frequency and / or the intensity depends on the alignment of the direction of gaze 6 with the transmitter of the radio signal, or speakers 11 acting in the same way as the indicator light, or by sending a voice message indicating the angular sector currently favored by the electronic radio frequency device 10 - for example "right side".
Il est également possible que l'antenne 3 et le dispositif électronique de radiofréquence 10 soient conformés de sorte qu'une direction d'émission soit privilégiée. Ainsi il est possible d'émettre un signal d'alerte avec une puissance accrue selon la direction privilégiée. Par ailleurs, le dispositif électronique de radiofréquence 10 peut être configuré de sorte que la direction privilégiée soit rotative par rapport au centre du casque de sorte que le signal d'alerte à puissance accrue balaye périodiquement toute la périphérie du casque, à la manière d'un phare côtier. II est également possible de configurer l'antenne 3 et le dispositif électronique de radiofréquence 10 de sorte que l'émission soit privilégiée dans le plan de base qui est le plan horizontal quand le casque 1 est porté par un utilisateur 12 debout regardant devant lui. En cas de chute, l'utilisateur se trouve couché, et donc le plan de base devient vertical. De ce fait, le dispositif de réceptionIt is also possible that the antenna 3 and the radio frequency electronic device 10 are shaped so that an emission direction is preferred. Thus it is possible to issue an alert signal with increased power in the preferred direction. Furthermore, the radio frequency electronic device 10 can be configured so that the preferred direction is rotatable relative to the center of the helmet so that the alert signal at increased power periodically scans the entire periphery of the helmet, in the manner of a coastal lighthouse. It is also possible to configure the antenna 3 and the electronic radiofrequency device 10 so that the emission is preferred in the basic plane which is the horizontal plane when the helmet 1 is worn by a standing user looking ahead. In case of a fall, the user is lying down, and thus the basic plane becomes vertical. As a result, the receiving device
(éloigné) peut détecter un danger du fait de l'absence (ou de la baisse significative) du signal émis par l'antenne 3 du casque. De préférence, cette fonctionnalité n'est pas décisive pour déterminer si un utilisateur est en danger, mais elle peut être un complément à un dispositif de mesure de choc. Ainsi, comme on peut le voir à la figure 2, l'antenne de la figure 1 a un gain nettement plus faible à partir d'une certaine incidence (zone claire 7), alors que sous ce niveau d'incidence, quelque soit le secteur angulaire, le gain est plus important (zone foncée 8) . De ce fait, cette antenne 3 privilégie le plan de faible incidence dans lequel s'étend la zone foncée 8.(remote) can detect a danger due to the absence (or significant decrease) of the signal emitted by the antenna 3 of the helmet. Preferably, this feature is not critical in determining whether a user is at risk, but it can be a complement to a shock measuring device. Thus, as can be seen in FIG. 2, the antenna of FIG. 1 has a much smaller gain from a certain incidence (light zone 7), whereas under this level of incidence, whatever the angular sector, the gain is greater (dark zone 8). As a result, this antenna 3 favors the low incidence plane in which the dark zone 8 extends.
Il est également possible que le dispositif électronique de radiofréquence comprenne un accéléromètre qui, quand l'utilisateur est à l'arrêt, est capable de fonctionner comme un inclinomètre en détectant l'accélération de la pesanteur de façon plus ou moins prononcée en fonction de l'inclinaison du casque. Dans ce cas, le dispositif électronique de radiofréquence 10 peut avantageusement comporter un dispositif de correction d'assiette 15 qui permet de corriger l'inclinaison du casque. Cette fonctionnalité est particulièrement intéressante quand la communication se fait avec une optimisation de l'émission d'onde dans un plan horizontal et permet à un utilisateur qui est dans une position couchée d' émettre de façon optimisée dans le plan horizontal, le dispositif de correction d'assiette envoyant un signal au dispositif électronique de radiofréquence 10 de sorte que ce dernier sélectionne les éléments d' antenne 4 adéquats. Elle est également intéressante en cas de danger étant donné que le plan d' émission est constant quelle que soit l'orientation du casque, ce qui permet de pouvoir émettre des signaux signalant un danger qui seront reçus par le récepteur qui restera normalement en liaison quelle que soit l'assiette physique du casque.It is also possible for the electronic radio frequency device to include an accelerometer which, when the user is at a standstill, is able to function as an inclinometer by detecting the acceleration of gravity to a greater or lesser extent depending on the tilting of the helmet. In this case, the electronic radiofrequency device 10 may advantageously comprise a level correction device 15 which makes it possible to correct the inclination of the helmet. This feature is particularly interesting when communication is done with an optimization of the wave emission in a plane horizontal and allows a user who is in a lying position to emit optimally in the horizontal plane, the attitude correction device sending a signal to the electronic radio frequency device 10 so that the latter selects the antenna elements 4 adequate. It is also interesting in case of danger since the emission plan is constant whatever the orientation of the helmet, which allows to be able to emit signals signaling a danger which will be received by the receiver which will normally remain connected whatever the physical attitude of the helmet.
Par ailleurs, l'interface radio - utilisateur 16 permettant d'ajuster les paramètres de transmission tels que le canal et le niveau sonore peut être également intégrée dans la structure du casque. Ainsi, il est possible d'utiliser des capteurs de proximité 16 de type capacitifs ou optiques, ou des capteurs de choc par exemple piézoélectriques, capables de répondre au déplacement ou au choc d'un doigt de l'utilisateur à la surface du casque. La source d'énergie 17,18 peut également être intégrée au casque 1. Ainsi, des accumulateurs 17 rechargeables peuvent être moulés dans la structure rigide de la coque 2. De même des éléments rechargeables ultrafins (empilement de batteries en couches ou piles montées en parallèle) peuvent être intégrés à la stratification dans des zones à faible risque de choc. De plus, des éléments photovoltaïques 18 souples noyés dans les couches supérieures de la stratification de la coque 1 permettent d'apporter un complément d'énergie. Il est également possible qu'une bobine permettant un couplage électromagnétique est intégrée à la structure mécanique du casque en vue de recharger les éléments d' accumulation d'énergie amovibles ou fixes, et adaptée à coopérer avec une autre bobine d'un chargeur. Moreover, the radio-user interface 16 making it possible to adjust the transmission parameters such as the channel and the sound level can also be integrated into the helmet structure. Thus, it is possible to use proximity sensors 16 of the capacitive or optical type, or shock sensors for example piezoelectric, capable of responding to the movement or impact of a finger of the user on the surface of the helmet. The energy source 17, 18 can also be integrated into the helmet 1. Thus, rechargeable accumulators 17 can be molded into the rigid structure of the shell 2. Likewise ultrafine rechargeable elements (stack of batteries in layers or batteries mounted in parallel) can be integrated into the stratification in areas of low risk of shock. In addition, flexible photovoltaic elements 18 embedded in the upper layers of the lamination of the shell 1 can provide additional energy. It is also possible that an electromagnetic coupling coil is integrated in the mechanical structure of the helmet in order to recharge the removable or fixed energy storage elements, and adapted to cooperate with another coil of a charger.

Claims

REVENDICATIONS
1. Casque (1) comprenant :1. Helmet (1) comprising:
- une coque (2) , - des moyens permettant une communication par radiofrëquence dont une antenne qui est intégrée dans la coque (2) , et est formée par au moins un élément d'antenne (4), et- a shell (2), - means for radiofrequency communication including an antenna which is integrated in the shell (2), and is formed by at least one antenna element (4), and
- un dispositif électronique radiofréquence (10) , l'antenne (3) et le dispositif électronique de radiofréquence (10) étant conformés de sorte qu'une direction de réception et/ou d'émission soit privilégiée, chaque élément d'antenne (4) étant intégré à la structure mécanique de la coque (2) et étant un élément structurels de la coque (2), caractérisé en ce qu'il comprend des moyens de guidage (11,13) permettant d'indiquer au porteur (12) du casque (1) la position angulaire d'un émetteur radio.an electronic radiofrequency device (10), the antenna (3) and the radio frequency electronic device (10) being shaped so that a direction of reception and / or emission is preferred, each antenna element (4) ) being integrated in the mechanical structure of the shell (2) and being a structural element of the shell (2), characterized in that it comprises guiding means (11,13) for indicating to the carrier (12) the helmet (1) the angular position of a radio transmitter.
2. Casque (1) selon la revendication 1, caractérisé en ce que les moyens de guidage (11,13) comprennent un voyant lumineux (13) émettant un signal dont la fréquence et/ou l'intensité dépend de l'alignement de la direction du regard (6) d'un porteur (12) du casque (1) avec l'émetteur du signal radio.2. Helmet (1) according to claim 1, characterized in that the guiding means (11,13) comprise a light (13) emitting a signal whose frequency and / or intensity depends on the alignment of the direction of the gaze (6) of a carrier (12) of the helmet (1) with the transmitter of the radio signal.
3. Casque (1) selon la revendication 1 ou 2, caractérisé en ce que les moyens de guidage (11,13) comprennent des haut-parleurs (11) émettant un signal dont la fréquence et/ou l'intensité dépend de l'alignement de la direction du regard (6) d'un porteur (12) du casque (1) avec l'émetteur du signal radio. 3. Helmet (1) according to claim 1 or 2, characterized in that the guide means (11,13) comprises loudspeakers (11) emitting a signal whose frequency and / or intensity depends on the alignment of the gaze direction (6) of a carrier (12) of the helmet (1) with the transmitter of the radio signal.
4. Casque (1) selon la revendication 1 ou 2, caractérisé en ce que les moyens de guidage (11,13) comprennent des haut-parleurs (11) émettant un message vocal indiquant le secteur angulaire actuellement privilégié par le dispositif électronique de radiofréquence (10) . 4. Helmet (1) according to claim 1 or 2, characterized in that the guide means (11,13) comprises speakers (11) transmitting a voice message indicating the angular sector currently favored by the electronic radio frequency device (10).
5. Casque (1) selon l'une des revendications 1 à 4, caractérisé en ce que la direction- privilégiée est fixe et correspond à la direction du regard (6) d'un porteur (12) du casque (1) . 5. Helmet (1) according to one of claims 1 to 4, characterized in that the preferred direction is fixed and corresponds to the direction of gaze (6) of a carrier (12) of the helmet (1).
6. Casque (1) selon la revendication 1 à 4, caractérisé en ce que la direction privilégiée varie en fonction des éléments d'antenne (4) sélectionnés de façon successive par le dispositif électronique de radiofréquence (10) . 6. Helmet (1) according to claim 1 to 4, characterized in that the preferred direction varies according to the antenna elements (4) successively selected by the radio frequency electronic device (10).
7. Casque (1) selon l'une des revendications 1 à 6, caractérisé en ce que l'antenne (3) et le dispositif électronique de radiofréquence (10) sont configurés de sorte que l'émission soit privilégiée dans un plan de base fixe par rapport au casque (1) . 7. Helmet (1) according to one of claims 1 to 6, characterized in that the antenna (3) and the radio frequency electronic device (10) are configured so that the emission is preferred in a basic plane fixed relative to the helmet (1).
8. Casque (1) selon l'une des revendications 1 à 7, caractérisé en ce qu' il comprend un accéléromètre et un dispositif de correction d'assiette (15) qui permet de corriger les caractéristiques de l'antenne (3) en fonction de l'inclinaison du casque (1) . 8. Helmet (1) according to one of claims 1 to 7, characterized in that it comprises an accelerometer and a pitch correction device (15) which makes it possible to correct the characteristics of the antenna (3) by function of the inclination of the helmet (1).
9. Casque (1) selon l'une des revendications 1 à 8, caractérisé en ce que l'antenne (3) fait partie intégrante de la stratification de la coque (2), le casque (1) étant en matériau composite.9. Helmet (1) according to one of claims 1 to 8, characterized in that the antenna (3) is an integral part of the lamination of the shell (2), the helmet (1) being made of composite material.
10. Casque (1) selon l'une des revendications 1 à 8, caractérisé en ce que chaque élément d'antenne (4) est englobé par le matériau de la coque (2) réalisée par injection sous pression.10. Helmet (1) according to one of claims 1 to 8, characterized in that each antenna element (4) is encompassed by the material of the shell (2) made by injection under pressure.
11. Casque (1) selon l'une des revendications 1 à 10, caractérisé en ce que chaque élément d'antenne (4) est en carbone, cuivre, aluminium ou autre matériau conducteur .11. Helmet (1) according to one of claims 1 to 10, characterized in that each antenna element (4) is carbon, copper, aluminum or other conductive material.
12. Casque (1) selon l'une des revendications 1 à 11, caractérisé en ce que chaque élément d'antenne (4) est revêtu d'un matériau isolant diélectrique. 12. Helmet (1) according to one of claims 1 to 11, characterized in that each antenna element (4) is coated with a dielectric insulating material.
13. Casque (1) selon l'une des revendications 1 à 12, caractérisé en ce que chaque élément d'antenne (4) se présente sous forme de fil, de tube, de bande, de pastilles en vis-à-vis d'un plan de masse. 13. Helmet (1) according to one of claims 1 to 12, characterized in that each antenna element (4) is in the form of wire, tube, strip, pellets vis-à-vis a plan of mass.
14. Casque (1) selon l'une des revendications 1 à 13, caractérisé en ce que les éléments d'antenne (4) sont associés en réseau série, parallèle ou un maillage.14. Helmet (1) according to one of claims 1 to 13, characterized in that the antenna elements (4) are associated in series network, parallel or mesh.
15. Casque (1) selon l'une des revendications 1 à 14, caractérisé en ce que le dispositif électronique radiofréquence (10) et une interface (16) avec l'utilisateur sont intégrés dans l'épaisseur de la coque (2) lors de la fabrication par stratification ou moulage sous pression.15. Helmet (1) according to one of claims 1 to 14, characterized in that the radio frequency electronic device (10) and an interface (16) with the user are integrated into the thickness of the shell (2) when manufacturing by laminating or die casting.
16. Casque (1) selon l'une des revendications 1 à 15, caractérisé en ce qu'une bobine permettant un couplage électromagnétique est intégrée à la structure mécanique du casque (1) en vue de recharger des éléments d'accumulation d'énergie portés par le casque (1) .16. Helmet (1) according to one of claims 1 to 15, characterized in that a coil for electromagnetic coupling is integrated in the mechanical structure of the helmet (1) to recharge energy storage elements worn by the helmet (1).
17. Casque (1) selon l'une des revendications 1 à 16, caractérisé en ce qu' il comprend des éléments photovoltalques (18) souples noyés dans les couches supérieures de la stratification de la coque (1) formant une source d' énergie . 17. Helmet (1) according to one of claims 1 to 16, characterized in that it comprises flexible photovoltaic elements (18) embedded in the upper layers of the stratification of the shell (1) forming a source of energy .
PCT/FR2006/002064 2005-09-09 2006-09-07 Antenna and radio communication system in the mechanical structure of a headset WO2007028902A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0509240A FR2890540B1 (en) 2005-09-09 2005-09-09 ANTENNA AND RADIO COMMUNICATION SYSTEM IN THE MECHANICAL STRUCTURE OF A HELMET
FR0509240 2005-09-09

Publications (1)

Publication Number Publication Date
WO2007028902A1 true WO2007028902A1 (en) 2007-03-15

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WO (1) WO2007028902A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2710666A4 (en) * 2011-04-28 2015-08-12 Cardo Systems Inc Helmet having embedded antenna
CN107850654A (en) * 2015-06-09 2018-03-27 诺基亚技术有限公司 Trigger the execution of active scan
US10868365B2 (en) 2019-01-02 2020-12-15 Earl Philip Clark Common geometry non-linear antenna and shielding device

Citations (6)

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Publication number Priority date Publication date Assignee Title
US3977003A (en) * 1974-10-15 1976-08-24 The United States Of America As Represented By The Secretary Of The Navy Conformal helmet antenna
US5142700A (en) * 1990-08-27 1992-08-25 Reed John W Protective helmet containing an integral transceiver
FR2717048A1 (en) * 1994-03-10 1995-09-15 Dassault Electronique Protective helmet apparatus with communication unit e.g. for motorcyclist
US5847651A (en) * 1998-03-24 1998-12-08 Lu; Yao Safety helmet with alarm means for calling for help
US5886667A (en) * 1996-10-01 1999-03-23 Bondyopadhayay; Probir K. Integrated microstrip helmet antenna system
US20050017911A1 (en) * 2003-07-21 2005-01-27 Jen-Feng Lee Helmet with built-in antenna

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977003A (en) * 1974-10-15 1976-08-24 The United States Of America As Represented By The Secretary Of The Navy Conformal helmet antenna
US5142700A (en) * 1990-08-27 1992-08-25 Reed John W Protective helmet containing an integral transceiver
FR2717048A1 (en) * 1994-03-10 1995-09-15 Dassault Electronique Protective helmet apparatus with communication unit e.g. for motorcyclist
US5886667A (en) * 1996-10-01 1999-03-23 Bondyopadhayay; Probir K. Integrated microstrip helmet antenna system
US5847651A (en) * 1998-03-24 1998-12-08 Lu; Yao Safety helmet with alarm means for calling for help
US20050017911A1 (en) * 2003-07-21 2005-01-27 Jen-Feng Lee Helmet with built-in antenna

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2710666A4 (en) * 2011-04-28 2015-08-12 Cardo Systems Inc Helmet having embedded antenna
CN107850654A (en) * 2015-06-09 2018-03-27 诺基亚技术有限公司 Trigger the execution of active scan
US10868365B2 (en) 2019-01-02 2020-12-15 Earl Philip Clark Common geometry non-linear antenna and shielding device

Also Published As

Publication number Publication date
FR2890540A1 (en) 2007-03-16
FR2890540B1 (en) 2007-11-16

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