EP2246932A2 - RF receiving/transmitting device for a domestic apparatus powered by an electrical network - Google Patents

RF receiving/transmitting device for a domestic apparatus powered by an electrical network Download PDF

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Publication number
EP2246932A2
EP2246932A2 EP10159266A EP10159266A EP2246932A2 EP 2246932 A2 EP2246932 A2 EP 2246932A2 EP 10159266 A EP10159266 A EP 10159266A EP 10159266 A EP10159266 A EP 10159266A EP 2246932 A2 EP2246932 A2 EP 2246932A2
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EP
European Patent Office
Prior art keywords
antenna
electrical conductor
conductor
electrical
radio frequency
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Legal status (The legal status 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 status listed.)
Granted
Application number
EP10159266A
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German (de)
French (fr)
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EP2246932A3 (en
EP2246932B1 (en
Inventor
Philippe Chouane
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Delta Dore SA
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Delta Dore SA
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Publication of EP2246932A2 publication Critical patent/EP2246932A2/en
Publication of EP2246932A3 publication Critical patent/EP2246932A3/en
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Publication of EP2246932B1 publication Critical patent/EP2246932B1/en
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    • 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
    • H01Q1/46—Electric supply lines or communication lines

Definitions

  • the present invention relates to a device for transmitting / receiving radio frequency signals for a domestic appliance powered by an electrical network.
  • transmission / reception device denotes either a transmitting device, a receiving device or a device for transmitting and receiving radio frequency signals.
  • a roller shutter comprises a motor which is powered by electrical conductors which are connected to an electrical network.
  • the motor is controlled by the control device which is designed to receive control-carrying radio frequency signals and / or to emit radio frequency signals carrying relative information, for example to a particular state of the apparatus.
  • the present invention is described later through the example of a roller shutter, its scope is not limited to this example but extends to all domestic appliances that are likely to be remotely controlled and / or capable of transmitting information to a remote device by transmitting radio frequency signals.
  • the patent FR2825498 describes a device for remote control of a shutter motor.
  • the control device comprises a radio frequency circuit and a radiofrequency signal transmission / reception antenna.
  • the antenna is connected to the radio frequency supply circuit so that radio frequency signals received by the antenna are applied to the circuit and / or so that the radio frequency signals provided by the circuit are radiated by the antenna.
  • the antenna is formed of an elongated monopole having a dimension of the order of a quarter of the wavelength of the frequency used for controlling the motor; the current frequency ranges for home applications being 433 MHz or 868 MHz, the length of the antenna is then about 17 or 18 cm.
  • the antenna is contained in a protective tube of the engine thus avoiding problems of fragility of the antenna or installation of it.
  • the antenna is electrically coupled to at least one of the power supply conductors of the motor and the controller.
  • the electrical coupling between the electrical conductor (s) and the antenna enables the control device to receive, via the antenna, radio frequency signals picked up by the electrical network which then serves as an antenna for receiving radiofrequency signals transmitted to the device. control.
  • the electrical coupling between the conductor (s) and the antenna enables the control device to transmit radiofrequency signals via the antenna to the electrical network which then serves as an antenna for transmitting radiofrequency signals.
  • the coupling between the antenna and the conductor (s) is a coupling that is both non-galvanic and selective.
  • the antenna which is in the form of a straight strand or a rectilinear printed circuit track, extends parallel to one or more feed conductors at a distance as small as possible to maximize the coupling between the antenna (strand or track) and the conductor (s).
  • the coupling between the antenna and the conductor (s) remains weak.
  • this strand and at least one supply conductor are contained in the same sheath so as to ensure the mechanical stability of their relative positions, that is to say a reliable coupling between them.
  • the antenna is a track of a printed circuit
  • at least one of these electrical conductors is a track parallel to that of the antenna and located in the vicinity thereof on the printed circuit. The reliability of the coupling is then also ensured.
  • the coupling is selective, that is, the antenna and the electrical conductor (s) are electrically coupled for signals in the radio frequency bands used for motor control, typically 433 to 868 MHz. At power supply frequencies, typically 50Hz, the antenna and the conductors are isolated from each other.
  • control device of the patent FR2825498 has advantages in terms of protection of the antenna and reliability of the coupling between the antenna and the electrical conductor or conductors, the length of the quarter-wave antenna and its position parallel to the electrical conductor impose a length minimum of the tube that contains it. While it would be advantageous for such antennas to be smaller because of the limited space that is generally reserved for them in the control devices of domestic appliances.
  • the technical problem solved by the present invention therefore consists in defining a control device of a domestic appliance which has the smallest possible dimensions in order to minimize the space reserved for them, that is to say to define a compact type control device.
  • the present invention relates to a radiofrequency signal transmission / reception device for a domestic appliance powered by an electrical network which comprises an electrical conductor of the electrical network and an antenna located near the conductor.
  • the device is characterized in that the antenna is twisted around the electrical conductor and one of its ends is intended to emit / receive a radio frequency signal while the other end is left free.
  • the antenna and the electrical conductor are electromagnetically coupled and the space reserved for this transmitting / receiving device in a control device of the domestic appliance is reduced compared to that required for housing a rectilinear antenna according to the invention. state of the art.
  • the present invention also relates to a control device which comprises a radiofrequency signal transmission / reception device above.
  • the present invention relates to a domestic appliance intended to be controlled and / or to transmit information by radiofrequency signals, characterized in that it comprises a control device above.
  • FIG. 1 To the Fig. 1 is shown a diagram of a home appliance controlled by radio frequency signals.
  • the exchange between the home appliance and a remote equipment (not shown) by radio frequency signals is bi-directional, that is to say that this remote equipment can issue a command to the home.
  • the home appliance can also transmit signals to the equipment for, for example, transmitting information on its operating status.
  • the domestic appliance comprises a member M which is, for example, a motor in the case where the domestic appliance is a roller shutter.
  • the motor is powered by an electrical network schematized here by the two electrical conductors CE1 and CE2.
  • the home appliance also comprises a device DC control device M by radiofrequency signals.
  • the control device DC comprises a radiofrequency supply circuit CR and a device D for transmitting / receiving radio frequency signals according to the present invention.
  • the function of the radio frequency circuit CR is to control the member M from the command extracted from radiofrequency signals carried by the electrical network and to form radiofrequency signals carrying information to be transmitted over the electrical network.
  • the Fig. 2 schematically represents an embodiment of the device D for transmitting / receiving radio frequency signals according to the present invention.
  • the device D is intended to operate in the UHF radio frequency band ("Ultra High Frequency") which ranges from 300 MHz to 3 GHz.
  • UHF radio frequency band (“Ultra High Frequency") which ranges from 300 MHz to 3 GHz.
  • the invention is not limited to this embodiment of the device that can be adapted to operate in other frequency bands.
  • the device D comprises a substantially rectilinear electrical conductor C connected in series to the electrical conductor CE1 of the electrical network and an antenna A located near the conductor C so that the antenna A and the conductor C are electromagnetically coupled.
  • the antenna A is twisted around the electrical conductor C so as to be electromagnetically coupled with the conductor C when the device D is used in the UHF radio frequency band, and not be coupled together outside this radio frequency band, in particular at the power supply frequencies.
  • One of the two ends A1 of the antenna A is connected to the radio frequency circuit CR while the other end A2 is left free.
  • the antenna is a solenoid.
  • the device D further comprises a reference plane P.
  • Each end C1, respectively C2, of the electrical conductor C is coupled to the reference plane in a zone P1, respectively P2.
  • the coupling, in the area P1, between the reference plane P and the end C2 of the electrical conductor C is provided to fix the load impedance at the frequency of use of the device.
  • the other coupling in the zone P2, is provided to fix the impedance and the frequency matching of the electrical conductor C to the frequency of use of the device.
  • the electrical conductor CE1 is connected near each of these two couplings so that the device D is mounted in series on this electrical conductor CE1.
  • the reference plane P is connected to a mass point PM and the dimensions of the reference plane P are such that it has an impedance much lower than a given characteristic impedance, typically 50 ohms.
  • the length of the electrical conductor CE is of the order of a quarter of the wavelength of the frequency of use of the device.
  • This characteristic associated with the particular position of the end A1 of the antenna makes it possible to obtain a difference between the attenuation between the end C1 of the electrical conductor C and the end A1 of the antenna, of the order of 2 dB at the frequency of use of the device D, typically equal to 868 MHz, and the attenuation between the end C2 of the electrical conductor C and the end A1 of the antenna, of the order of 12 dB at this frequency of use.
  • the device D is produced by etching tracks on a circuit FR4 type standard print: the reference plane P and the electrical conductor C are two engraved tracks and the antenna A is an engraved track structure which forms a winding around the track of the electrical conductor.
  • the printed circuit is multilayer.
  • the use of a multilayer printed circuit is particularly advantageous because not only is its realization inexpensive in financial terms but it also allows to isolate the electrical conductor C of the track structure that forms the antenna A.
  • the device D operates in the following manner.
  • the signal is then present on the end C1 and transmitted to the antenna A by electromagnetic coupling between the antenna A and the electrical conductor C
  • the signal is then received by the radio frequency circuit CR which obtains the command from this signal.
  • the impedance on the end C2 of the conductor C, then connected to charges connected to the electrical network is then substantially equal to the characteristic impedance determined by the dimensions of the electrical conductor C.
  • the device D can be characterized as being directional, that is to say that the radiofrequency signals picked up by the conductor CE1 enter and leave at the same end of the conductor C, in this case C1.

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Abstract

The device (D) has an electrical conductor (C) adapted to be connected to an electric network. A solenoid antenna (A) is arranged near the electrical conductor, and is connected to a radiofrequency circuit (CR). The antenna is twisted around the electrical conductor. An end (A1) of the antenna is adapted to be connected to the radiofrequency circuit, while another end (A2) of the antenna is free. The electrical conductor is mounted in series on an electrical conductor (CE1) of the electric network.

Description

La présente invention concerne un dispositif d'émission/réception de signaux radiofréquences pour un appareil domestique alimenté par un réseau électrique.The present invention relates to a device for transmitting / receiving radio frequency signals for a domestic appliance powered by an electrical network.

L'expression dispositif d'émission/réception désigne soit un dispositif d'émission, soit un dispositif de réception, soit un dispositif d'émission et de réception de signaux radiofréquences.The term "transmission / reception device" denotes either a transmitting device, a receiving device or a device for transmitting and receiving radio frequency signals.

Il est connu d'utiliser des dispositifs de commande à distance d'un appareil domestique, tel qu'un volet roulant. En effet, un volet roulant comporte un moteur qui est alimenté par des conducteurs électriques qui sont reliés à un réseau électrique. Le moteur est piloté par le dispositif de commande qui est prévu pour recevoir des signaux radiofréquences porteurs de commande et/ou émettre des signaux radiofréquences porteurs d'informations relatives, par exemple à un état particulier de l'appareil. Bien que la présente invention est décrite par la suite au travers de l'exemple d'un volet roulant, sa portée n'en est pas pour autant limitée à cet exemple mais s'étend à l'ensemble des appareils domestiques qui sont susceptibles d'être commandés à distance et/ou qui sont susceptibles d'émettre des informations à destination d'un équipement distant et ce par transmission de signaux radiofréquences.It is known to use remote control devices of a home appliance, such as a shutter. Indeed, a roller shutter comprises a motor which is powered by electrical conductors which are connected to an electrical network. The motor is controlled by the control device which is designed to receive control-carrying radio frequency signals and / or to emit radio frequency signals carrying relative information, for example to a particular state of the apparatus. Although the present invention is described later through the example of a roller shutter, its scope is not limited to this example but extends to all domestic appliances that are likely to be remotely controlled and / or capable of transmitting information to a remote device by transmitting radio frequency signals.

Le brevet FR2825498 décrit un dispositif de commande à distance d'un moteur de volet roulant. Le dispositif de commande comporte un circuit radiofréquence et une antenne d'émission/réception de signaux radiofréquences.The patent FR2825498 describes a device for remote control of a shutter motor. The control device comprises a radio frequency circuit and a radiofrequency signal transmission / reception antenna.

L'antenne est reliée au circuit radiofréquence d'alimentation de sorte que des signaux radiofréquences reçus par l'antenne soient appliqués au circuit et/ou de sorte que les signaux radiofréquences fournis par le circuit soient rayonnés par l'antenne.The antenna is connected to the radio frequency supply circuit so that radio frequency signals received by the antenna are applied to the circuit and / or so that the radio frequency signals provided by the circuit are radiated by the antenna.

L'antenne est formée d'un monopole allongé présentant une dimension de l'ordre du quart de la longueur d'onde de la fréquence utilisée pour la commande du moteur ; les plages de fréquences courantes pour les applications domestiques étant 433 MHz ou 868 MHz, la longueur de l'antenne est alors de 17 ou 18 cm environ.The antenna is formed of an elongated monopole having a dimension of the order of a quarter of the wavelength of the frequency used for controlling the motor; the current frequency ranges for home applications being 433 MHz or 868 MHz, the length of the antenna is then about 17 or 18 cm.

L'antenne est contenue dans un tube protecteur du moteur évitant ainsi des problèmes de fragilité de l'antenne ou d'installation de celle-ci.The antenna is contained in a protective tube of the engine thus avoiding problems of fragility of the antenna or installation of it.

L'antenne est couplée électriquement à au moins un des conducteurs d'alimentation électrique du moteur et du dispositif de commande. Le couplage électrique entre le ou les conducteurs électriques et l'antenne permet au dispositif de commande de recevoir, à travers l'antenne, des signaux radiofréquences captés par le réseau électrique servant alors d'antenne de réception de signaux radiofréquences émis à destination du dispositif de commande. Inversement, le couplage électrique entre le ou les conducteurs et l'antenne permet au dispositif de commande d'émettre à travers l'antenne des signaux radiofréquences vers le réseau électrique qui sert alors d'antenne d'émission de signaux radiofréquences.The antenna is electrically coupled to at least one of the power supply conductors of the motor and the controller. The electrical coupling between the electrical conductor (s) and the antenna enables the control device to receive, via the antenna, radio frequency signals picked up by the electrical network which then serves as an antenna for receiving radiofrequency signals transmitted to the device. control. Conversely, the electrical coupling between the conductor (s) and the antenna enables the control device to transmit radiofrequency signals via the antenna to the electrical network which then serves as an antenna for transmitting radiofrequency signals.

Le couplage entre l'antenne et le ou les conducteurs est un couplage à la fois non galvanique et sélectif. Pour cela l'antenne, qui se présente sous la forme d'un brin rectiligne ou d'une piste de circuit imprimé rectiligne, s'étend parallèlement à un ou plusieurs conducteurs d'alimentation à une distance aussi faible que possible afin de maximiser le couplage entre l'antenne (brin ou piste) et le ou les conducteurs. Cependant, le couplage entre l'antenne et le ou les conducteurs reste faible.The coupling between the antenna and the conductor (s) is a coupling that is both non-galvanic and selective. For this, the antenna, which is in the form of a straight strand or a rectilinear printed circuit track, extends parallel to one or more feed conductors at a distance as small as possible to maximize the coupling between the antenna (strand or track) and the conductor (s). However, the coupling between the antenna and the conductor (s) remains weak.

Dans le cas d'un brin, ce brin et au moins un conducteur d'alimentation sont contenus dans une même gaine de manière à assurer la stabilité mécanique de leurs positionnements relatifs c'est-à-dire un couplage fiable entre eux. Dans le cas où l'antenne est une piste d'un circuit imprimé, au moins l'un de ces conducteurs électriques est une piste parallèle à celle de l'antenne et située au voisinage de celle-ci sur le circuit imprimé. La fiabilité du couplage est alors également assurée.In the case of a strand, this strand and at least one supply conductor are contained in the same sheath so as to ensure the mechanical stability of their relative positions, that is to say a reliable coupling between them. In the case where the antenna is a track of a printed circuit, at least one of these electrical conductors is a track parallel to that of the antenna and located in the vicinity thereof on the printed circuit. The reliability of the coupling is then also ensured.

Le couplage est sélectif c'est-à-dire que l'antenne et le ou les conducteurs électriques sont couplés électriquement pour des signaux dans les bandes de radiofréquence utilisées pour la commande du moteur, typiquement de 433 à 868 MHz. Aux fréquences d'alimentation électrique, typiquement 50Hz, l'antenne et les conducteurs sont isolés l'un de l'autre.The coupling is selective, that is, the antenna and the electrical conductor (s) are electrically coupled for signals in the radio frequency bands used for motor control, typically 433 to 868 MHz. At power supply frequencies, typically 50Hz, the antenna and the conductors are isolated from each other.

Bien que le dispositif de commande du brevet FR2825498 présente des avantages en terme de protection de l'antenne et de fiabilité du couplage entre l'antenne et le ou les conducteurs électriques, la longueur de l'antenne quart d'onde ainsi que sa position parallèle par rapport au conducteur électrique imposent une longueur minimale du tube qui la contient. Alors qu'il serait avantageux que de telles antennes soient de plus petites dimensions du fait du peu de place qui leur est généralement réservé dans les dispositifs de commande d'appareils domestiques.Although the control device of the patent FR2825498 has advantages in terms of protection of the antenna and reliability of the coupling between the antenna and the electrical conductor or conductors, the length of the quarter-wave antenna and its position parallel to the electrical conductor impose a length minimum of the tube that contains it. While it would be advantageous for such antennas to be smaller because of the limited space that is generally reserved for them in the control devices of domestic appliances.

Le problème technique résolu par la présente invention consiste donc à définir un dispositif de commande d'un appareil domestique qui a des dimensions les plus réduites possibles afin de minimiser l'espace qui leur est réservé, c'est-à-dire de définir un dispositif de commande compacte de type composant.The technical problem solved by the present invention therefore consists in defining a control device of a domestic appliance which has the smallest possible dimensions in order to minimize the space reserved for them, that is to say to define a compact type control device.

A cet effet, la présente invention concerne un dispositif d'émission/réception de signaux radiofréquences pour un appareil domestique alimenté par un réseau électrique qui comporte un conducteur électrique du réseau électrique et une antenne située à proximité du conducteur. Le dispositif est caractérisé en ce que l'antenne est torsadée autour du conducteur électrique et l'une de ses extrémités est destinée à émettre/recevoir un signal radiofréquence tandis que l'autre extrémité est laissée libre.To this end, the present invention relates to a radiofrequency signal transmission / reception device for a domestic appliance powered by an electrical network which comprises an electrical conductor of the electrical network and an antenna located near the conductor. The device is characterized in that the antenna is twisted around the electrical conductor and one of its ends is intended to emit / receive a radio frequency signal while the other end is left free.

Ainsi, l'antenne et le conducteur électrique sont couplés électromagnétiquement et l'espace réservé à ce dispositif d'émission/réception dans un dispositif de commande de l'appareil domestique est réduit par rapport à celui nécessaire pour loger une antenne rectiligne selon l'état de la technique.Thus, the antenna and the electrical conductor are electromagnetically coupled and the space reserved for this transmitting / receiving device in a control device of the domestic appliance is reduced compared to that required for housing a rectilinear antenna according to the invention. state of the art.

La présente invention concerne également un dispositif de commande qui comporte un dispositif d'émission/réception de signaux radiofréquences ci-dessus.The present invention also relates to a control device which comprises a radiofrequency signal transmission / reception device above.

Enfin, la présente invention concerne un appareil domestique prévu pour être commandé et/ou émettre des informations par signaux radiofréquences caractérisé en ce qu'il comporte un dispositif de commande ci-dessus.Finally, the present invention relates to a domestic appliance intended to be controlled and / or to transmit information by radiofrequency signals, characterized in that it comprises a control device above.

Les caractéristiques de l'invention mentionnées ci-dessus, ainsi que d'autres, apparaîtront plus clairement à la lecture de la description suivante d'un exemple de réalisation, ladite description étant faite en relation avec les dessins joints, parmi lesquels:

  • La Fig. 1 représente schématiquement un appareil domestique commandé par signaux radiofréquences,
  • La Fig. 2 représente schématiquement un mode de réalisation du dispositif d'émission/réception de signaux radiofréquences selon la présente invention.
The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the following description of an example of embodiment, said description being made in connection with the accompanying drawings, among which:
  • The Fig. 1 schematically represents a home appliance controlled by radio frequency signals,
  • The Fig. 2 schematically represents an embodiment of the radiofrequency signal transmission / reception device according to the present invention.

A la Fig. 1 est représenté un schéma d'un appareil domestique commandé par signaux radiofréquences. Comme on le verra par la suite, l'échange entre l'appareil domestique et un équipement distant (non représenté) par signaux radiofréquences est bi-directionnel c'est-à-dire que cet équipement distant peut émettre une commande à destination de l'appareil domestique mais l'appareil domestique peut également émettre des signaux à destination de l'équipement pour, par exemple, transmettre des informations sur son état de fonctionnement.To the Fig. 1 is shown a diagram of a home appliance controlled by radio frequency signals. As will be seen later, the exchange between the home appliance and a remote equipment (not shown) by radio frequency signals is bi-directional, that is to say that this remote equipment can issue a command to the home. home appliance but the home appliance can also transmit signals to the equipment for, for example, transmitting information on its operating status.

L'appareil domestique comporte un organe M qui est, par exemple, un moteur dans le cas où l'appareil domestique est un volet roulant. Le moteur est alimenté par un réseau électrique schématisé ici par les deux conducteurs électriques CE1 et CE2.The domestic appliance comprises a member M which is, for example, a motor in the case where the domestic appliance is a roller shutter. The motor is powered by an electrical network schematized here by the two electrical conductors CE1 and CE2.

L'appareil domestique comporte également un dispositif de commande DC de l'organe M par signaux radiofréquences.The home appliance also comprises a device DC control device M by radiofrequency signals.

Le dispositif de commande DC comporte un circuit radiofréquence d'alimentation CR et un dispositif D d'émission/réception de signaux radiofréquences selon la présente invention.The control device DC comprises a radiofrequency supply circuit CR and a device D for transmitting / receiving radio frequency signals according to the present invention.

Le circuit radiofréquence CR a pour rôle de piloter l'organe M à partir de la commande extraite de signaux radiofréquences portés par le réseau électrique et de former des signaux radiofréquences porteurs d'informations à transmettre sur le réseau électrique.The function of the radio frequency circuit CR is to control the member M from the command extracted from radiofrequency signals carried by the electrical network and to form radiofrequency signals carrying information to be transmitted over the electrical network.

La Fig. 2 représente schématiquement un mode de réalisation du dispositif D d'émission/réception de signaux radiofréquences selon la présente invention.The Fig. 2 schematically represents an embodiment of the device D for transmitting / receiving radio frequency signals according to the present invention.

Le dispositif D est prévu pour fonctionner dans la bande de radiofréquences UHF (« Ultra High Frequency ») qui va de 300 MHz à 3 GHz. Toutefois, l'invention ne se limite pas à ce mode de réalisation du dispositif qui peut être adapté pour fonctionner dans d'autres bandes de fréquences.The device D is intended to operate in the UHF radio frequency band ("Ultra High Frequency") which ranges from 300 MHz to 3 GHz. However, the invention is not limited to this embodiment of the device that can be adapted to operate in other frequency bands.

Le dispositif D comporte un conducteur électrique C, sensiblement rectiligne, relié en série sur le conducteur électrique CE1 du réseau électrique et une antenne A située à proximité du conducteur C de sorte que l'antenne A et le conducteur C soient couplés électromagnétiquement. L'antenne A est torsadée autour du conducteur électrique C de sorte à être couplée électromagnétiquement avec le conducteur C lorsque le dispositif D est utilisé dans la bande de radiofréquences UHF, et ne pas être couplée entre eux en dehors de cette bande de radiofréquences, notamment aux fréquences d'alimentation électrique.The device D comprises a substantially rectilinear electrical conductor C connected in series to the electrical conductor CE1 of the electrical network and an antenna A located near the conductor C so that the antenna A and the conductor C are electromagnetically coupled. The antenna A is twisted around the electrical conductor C so as to be electromagnetically coupled with the conductor C when the device D is used in the UHF radio frequency band, and not be coupled together outside this radio frequency band, in particular at the power supply frequencies.

L'une des deux extrémités A1 de l'antenne A est reliée au circuit radiofréquence CR tandis que l'autre extrémité A2 est laissée libre.One of the two ends A1 of the antenna A is connected to the radio frequency circuit CR while the other end A2 is left free.

Selon un mode de réalisation, l'antenne est un solénoïde.According to one embodiment, the antenna is a solenoid.

Le dispositif D comporte en outre un plan de référence P. Chaque extrémité C1, respectivement C2, du conducteur électrique C est couplée au plan de référence dans une zone P1, respectivement P2.The device D further comprises a reference plane P. Each end C1, respectively C2, of the electrical conductor C is coupled to the reference plane in a zone P1, respectively P2.

De préférence le couplage, dans la zone P1, entre le plan de référence P et l'extrémité C2 du conducteur électrique C est prévu pour fixer l'impédance de charge à la fréquence d'utilisation du dispositif.Preferably the coupling, in the area P1, between the reference plane P and the end C2 of the electrical conductor C is provided to fix the load impedance at the frequency of use of the device.

L'autre couplage, dans la zone P2, est prévu pour fixer l'impédance et l'accord en fréquence du conducteur électrique C à la fréquence d'utilisation du dispositif.The other coupling, in the zone P2, is provided to fix the impedance and the frequency matching of the electrical conductor C to the frequency of use of the device.

Le conducteur électrique CE1 est connecté à proximité de chacun de ces deux couplages pour que le dispositif D soit monté en série sur ce conducteur électrique CE1.The electrical conductor CE1 is connected near each of these two couplings so that the device D is mounted in series on this electrical conductor CE1.

Selon un mode de réalisation, le plan de référence P est relié à un point de masse PM et les dimensions du plan de référence P sont telles qu'il présente une impédance très inférieure à une impédance caractéristique donnée, typiquement 50 ohms.According to one embodiment, the reference plane P is connected to a mass point PM and the dimensions of the reference plane P are such that it has an impedance much lower than a given characteristic impedance, typically 50 ohms.

De préférence, la longueur du conducteur électrique CE est de l'ordre du quart de la longueur d'onde de la fréquence d'utilisation du dispositif Cette caractéristique associée à la position particulière de l'extrémité A1 de l'antenne permet d'obtenir une différence entre l'atténuation entre l'extrémité C1 du conducteur électrique C et l'extrémité A1 de l'antenne, de l'ordre de 2 dB à la fréquence d'utilisation du dispositif D, typiquement égale à 868MHz, et l'atténuation entre l'extrémité C2 du conducteur électrique C et l'extrémité A1 de l'antenne, de l'ordre de 12 dB à cette fréquence d'utilisation. Cette différence d'atténuation est avantageuse car elle isole le transfert des signaux radiofréquences entre l'extrémité A1 de l'antenne et l'extrémité C1 du conducteur C, des variations des impédances de charge qui sont montées en série avec le conducteur C au niveau de l'extrémité C2 du conducteur C. Selon un mode de réalisation, le dispositif D est réalisé par gravure de pistes sur un circuit imprimé standard de type FR4 : le plan de référence P et le conducteur électrique C sont deux pistes gravées et l'antenne A est une structure de pistes gravées qui forme un bobinage autour de la piste du conducteur électrique.Preferably, the length of the electrical conductor CE is of the order of a quarter of the wavelength of the frequency of use of the device This characteristic associated with the particular position of the end A1 of the antenna makes it possible to obtain a difference between the attenuation between the end C1 of the electrical conductor C and the end A1 of the antenna, of the order of 2 dB at the frequency of use of the device D, typically equal to 868 MHz, and the attenuation between the end C2 of the electrical conductor C and the end A1 of the antenna, of the order of 12 dB at this frequency of use. This attenuation difference is advantageous because it isolates the transfer of the radio frequency signals between the end A1 of the antenna and the end C1 of the conductor C, variations of the load impedances which are connected in series with the conductor C at the level of the antenna. of the end C2 of the conductor C. According to one embodiment, the device D is produced by etching tracks on a circuit FR4 type standard print: the reference plane P and the electrical conductor C are two engraved tracks and the antenna A is an engraved track structure which forms a winding around the track of the electrical conductor.

Selon une variante, le circuit imprimé est multicouche. L'utilisation d'un circuit imprimé multicouche est particulièrement avantageuse car non seulement sa réalisation est peu coûteuse en terme financier mais elle permet également d'isoler le conducteur électrique C de la structure de pistes qui forme l'antenne A.According to one variant, the printed circuit is multilayer. The use of a multilayer printed circuit is particularly advantageous because not only is its realization inexpensive in financial terms but it also allows to isolate the electrical conductor C of the track structure that forms the antenna A.

Le dispositif D fonctionne de la manière suivante.The device D operates in the following manner.

Admettons qu'un signal radiofréquence porteur d'une commande ait été capté par le conducteur électrique CE1, le signal est alors présent sur l'extrémité C1 et transmis à l'antenne A par couplage électromagnétique entre l'antenne A et le conducteur électrique C. Le signal est alors reçu par le circuit radiofréquence CR qui obtient la commande à partir de ce signal. On peut noter que l'impédance sur l'extrémité C2 du conducteur C, alors reliée à des charges connectées au réseau électrique, est alors sensiblement égale à l'impédance caractéristique déterminée par les dimensions du conducteur électrique C.Suppose that a radiofrequency signal carrying a command has been picked up by the electrical conductor CE1, the signal is then present on the end C1 and transmitted to the antenna A by electromagnetic coupling between the antenna A and the electrical conductor C The signal is then received by the radio frequency circuit CR which obtains the command from this signal. It may be noted that the impedance on the end C2 of the conductor C, then connected to charges connected to the electrical network, is then substantially equal to the characteristic impedance determined by the dimensions of the electrical conductor C.

Admettons maintenant qu'un signal ait été émis par le circuit radiofréquence. Ce signal présent sur l'extrémité A1 de l'antenne est alors transmis au conducteur électrique C par couplage électromagnétique entre l'antenne A et le conducteur électrique C puis acheminé usqu'à l'extrémité C1 du conducteur C avant d'être rayonné par le conducteur CE1. On peut noter que l'impédance sur l'extrémité C2 du conducteur C est alors sensiblement égale à l'impédance caractéristique déterminée par les dimensions du conducteur électrique C.Let us now assume that a signal has been emitted by the radio frequency circuit. This signal present on the end A1 of the antenna is then transmitted to the electrical conductor C by electromagnetic coupling between the antenna A and the electrical conductor C and then routed to the end C1 of the conductor C before being radiated by the driver CE1. It can be noted that the impedance on the end C2 of the conductor C is then substantially equal to the characteristic impedance determined by the dimensions of the electrical conductor C.

Ainsi, on peut caractériser le dispositif D comme étant directionnel c'est-à-dire que les signaux radiofréquences captés par le conducteur CE1 entrent et sortent par une même extrémité du conducteur C, en l'occurrence C1.Thus, the device D can be characterized as being directional, that is to say that the radiofrequency signals picked up by the conductor CE1 enter and leave at the same end of the conductor C, in this case C1.

Claims (10)

Dispositif d'émission/réception de signaux radiofréquences pour un appareil domestique alimenté par un réseau électrique, ledit dispositif comportant un conducteur électrique (C) destiné à être relié au réseau électrique et une antenne (A) située à proximité du conducteur (C), l'une des extrémités (A1) de l'antenne étant destinée à être reliée au circuit radiofréquence tandis que l'autre extrémité (A2) étant laissée libre, caractérisé en ce que l'antenne (A) est torsadée autour du conducteur électrique (C) et en ce que le dispositif comporte un plan de référence (P) couplé au conducteur électrique (C) au niveau de ses deux extrémités (P1, P2).Device for transmitting / receiving radio frequency signals for a household appliance powered by an electrical network, said device comprising an electrical conductor (C) intended to be connected to the electrical network and an antenna (A) located near the conductor (C), one of the ends (A1) of the antenna being intended to be connected to the radiofrequency circuit while the other end (A2) being left free, characterized in that the antenna (A) is twisted around the electrical conductor ( C) and in that the device comprises a reference plane (P) coupled to the electrical conductor (C) at its two ends (P1, P2). Dispositif selon la revendication 1, dans lequel le conducteur électrique (C) est monté en série sur un conducteur du réseau électrique.Device according to claim 1, wherein the electrical conductor (C) is connected in series with a conductor of the electrical network. Dispositif selon la revendication 1 ou 2, dans lequel l'antenne est un solénoïde.Device according to claim 1 or 2, wherein the antenna is a solenoid. Dispositif selon l'une des revendications 1 à 3, dans lequel l'un des couplages (P1) entre le plan de référence (P) et une des extrémités (C2) du conducteur électrique (C) est prévu pour fixer l'impédance de charge à la fréquence d'utilisation du dispositif, et l'autre couplage (P2) entre le plan de référence (P) et l'autre extrémité (C1) du conducteur électrique (C) est prévu pour fixer l'impédance et l'accord en fréquence du conducteur électrique (C) à la fréquence d'utilisation du dispositif.Device according to one of claims 1 to 3, wherein one of the couplings (P1) between the reference plane (P) and one end (C2) of the electrical conductor (C) is provided to fix the impedance of charge at the frequency of use of the device, and the other coupling (P2) between the reference plane (P) and the other end (C1) of the electrical conductor (C) is provided to fix the impedance and the frequency agreement of the electrical conductor (C) at the frequency of use of the device. Dispositif selon l'une des revendications précédentes, dans lequel les dimensions du plan de référence (P) sont telles qu'il présente une impédance inférieure à une impédance caractéristique lorsqu'il est relié à un point de masse (PM).Device according to one of the preceding claims, wherein the dimensions of the reference plane (P) are such that it has an impedance lower than a characteristic impedance when connected to a ground point (PM). Dispositif selon l'une des revendications 1 à 5, dans lequel la longueur du conducteur électrique est de l'ordre du quart de la longueur d'onde de la fréquence d'utilisation du dispositif.Device according to one of claims 1 to 5, wherein the length of the electrical conductor is of the order of a quarter of the wavelength of the frequency of use of the device. Dispositif selon l'une des revendications précédentes, dans lequel le plan de référence (P) et le conducteur électrique (C) sont deux pistes gravées sur un circuit et l'antenne (A) est une structure de pistes gravées qui forme un bobinage autour de la piste du conducteur électrique.Device according to one of the preceding claims, in which the reference plane (P) and the electrical conductor (C) are two tracks etched on a circuit and the antenna (A) is an engraved track structure which forms a winding around the electrical conductor track. Dispositif selon la revendication 7, dans lequel le circuit est multicouche.Device according to claim 7, wherein the circuit is multilayer. Dispositif de commande par signaux radiofréquences d'un appareil domestique alimenté par un réseau électrique, caractérisé en ce qu'il comporte un dispositif d'émission/réception de signaux radiofréquences conforme à l'une des revendications 1 à 8.Radio frequency control device for a domestic appliance powered by an electrical network, characterized in that it comprises a device for transmitting / receiving radio frequency signals according to one of Claims 1 to 8. Appareil domestique alimenté par un réseau électrique et prévu pour être commandé par signaux radiofréquences, caractérisé en ce qu'il comporte un dispositif de commande conforme à la revendication 9.Domestic appliance powered by an electrical network and adapted to be controlled by radio frequency signals, characterized in that it comprises a control device according to claim 9.
EP20100159266 2009-04-08 2010-04-07 RF receiving/transmitting device for a domestic apparatus powered by an electrical network Not-in-force EP2246932B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0952283A FR2944385B1 (en) 2009-04-08 2009-04-08 DEVICE FOR TRANSMITTING / RECEIVING RADIO FREQUENCY SIGNALS FOR A DOMESTIC APPLIANCE POWERED BY AN ELECTRICAL NETWORK

Publications (3)

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EP2246932A2 true EP2246932A2 (en) 2010-11-03
EP2246932A3 EP2246932A3 (en) 2011-03-23
EP2246932B1 EP2246932B1 (en) 2012-06-06

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EP20100159266 Not-in-force EP2246932B1 (en) 2009-04-08 2010-04-07 RF receiving/transmitting device for a domestic apparatus powered by an electrical network

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EP (1) EP2246932B1 (en)
ES (1) ES2387952T3 (en)
FR (1) FR2944385B1 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
FR3061340A1 (en) * 2016-12-26 2018-06-29 Somfy Sas MULTI-FREQUENCY DEVICE, CONTROL AND / OR CONTROL DEVICE, DOMOTIC EQUIPMENT AND MULTIFREQUENCY ASSOCIATED SYSTEM

Citations (1)

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Publication number Priority date Publication date Assignee Title
FR2825498A1 (en) 2001-06-01 2002-12-06 Somfy RADIO FREQUENCY DRIVE DEVICE

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Publication number Priority date Publication date Assignee Title
US2991355A (en) * 1958-01-27 1961-07-04 Zenith Radio Corp Power cord type antenna system for a wave-signal receiver
FR2913132B1 (en) * 2007-02-22 2010-05-21 Somfy Sas RADIO CONTROL DEVICE, ELECTRIC ACTUATOR AND DOMOTIC INSTALLATION COMPRISING SUCH A DEVICE

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
FR2825498A1 (en) 2001-06-01 2002-12-06 Somfy RADIO FREQUENCY DRIVE DEVICE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3061340A1 (en) * 2016-12-26 2018-06-29 Somfy Sas MULTI-FREQUENCY DEVICE, CONTROL AND / OR CONTROL DEVICE, DOMOTIC EQUIPMENT AND MULTIFREQUENCY ASSOCIATED SYSTEM
WO2018122012A1 (en) * 2016-12-26 2018-07-05 Somfy Activites Sa Multifrequency device, controlling and/or monitoring device, associated multifrequency system and piece of home-automation equipment
US10666301B2 (en) 2016-12-26 2020-05-26 Somfy Activites Sa Multifrequency device, controlling and/or monitoring device, associated multifrequency system and piece of home-automation equipment

Also Published As

Publication number Publication date
FR2944385B1 (en) 2011-06-17
EP2246932A3 (en) 2011-03-23
FR2944385A1 (en) 2010-10-15
EP2246932B1 (en) 2012-06-06
ES2387952T3 (en) 2012-10-04

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