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EP2568458A1 - Device for transmitting a signal including transmission of a radio frequency signal - Google Patents

Device for transmitting a signal including transmission of a radio frequency signal Download PDF

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Publication number
EP2568458A1
EP2568458A1 EP12180395A EP12180395A EP2568458A1 EP 2568458 A1 EP2568458 A1 EP 2568458A1 EP 12180395 A EP12180395 A EP 12180395A EP 12180395 A EP12180395 A EP 12180395A EP 2568458 A1 EP2568458 A1 EP 2568458A1
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EP
European Patent Office
Prior art keywords
capacitor
electronic logic
power supply
loop
current
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EP12180395A
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German (de)
French (fr)
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EP2568458B1 (en
Inventor
Patrick Bacot
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Air Liquide Services SA
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Air Liquide Services SA
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link

Definitions

  • the present invention relates to a device for transmitting a remote signal.
  • the invention more particularly concerns a device for transmitting a remote signal, in particular for transmitting a signal by radio frequency, comprising an electronic logic such as a microcontroller, a wireless data transmission member such as a modem connected to the electronic logic, a power supply circuit connected to the electronic logic and the transmission member.
  • an electronic logic such as a microcontroller
  • a wireless data transmission member such as a modem connected to the electronic logic
  • a power supply circuit connected to the electronic logic and the transmission member.
  • An object of the present invention is to overcome all or part of the disadvantages of the prior art noted above.
  • the invention may also relate to any alternative device or method comprising any combination of the above or below features.
  • the device for transmitting a remote signal comprises an electronic logic 2 such as a microcontroller and a wireless data transmission member 3 such as a modem.
  • the transmission member 3 is an integrated GSM modem and the electronic logic 2 is a microcontroller.
  • the transmission member 3 is connected to the electronic logic 2.
  • a power supply circuit is also connected to the electronic logic 2 and the transmission member 3.
  • This power supply circuit comprises a current loop 4, for example a 4-20 mA current loop and a first electrical capacitance.
  • the current loop 4 may comprise a sensor 7 of a physical quantity such as a pressure sensor.
  • the current loop further comprises, for example associated with the sensor 7, a transmitter converting the value of the measurement of the physical quantity made by the sensor 7 into an electric current between 4 and 20A.
  • the current loop 4 further comprises a receiver 9 and an electrical supply 8 of the transmitter of the sensor 7.
  • the receiver 9 and the power supply 8 can be located in a remote electrical installation (represented symbolically in dotted lines in the figure) .
  • the first capacitor 5 is preferably connected in parallel with a voltage limiting member, such as a zener diode.
  • the voltage limiter member 10 is preferably located on the measuring loop.
  • the first electrical capacity is for example a supercapacity adapted to store enough useful energy to ensure reliable transmission.
  • the first capacitance 5 has a value between 100F and 1000F (farads).
  • the first capacitor 5 is connected in parallel with the current loop 4 and also with the electronic logic 2, to electrically power the electronic logic 2 from the current coming from the measurement loop 4 via the first capacitor 5.
  • the first capacitor 5 is also connected to the transmission member 3 via a voltage booster member 6, for selectively powering the transmission member 3 from the current coming from the measurement loop 4 via the first capacitor 5 and the first capacitor 5.
  • 6 voltage booster is for example a DC / DC electric converter such as a "booster", for example a switching converter equipped with an inductor.
  • the device thus achieves an accumulation of the available energy in a 4-20mA current loop in order to selectively feed a transmission member 3 that can consume substantially more than the available current.
  • the available current can go down to 4 mA in a 4-20mA current loop.
  • the first capacitor 5 is electrically coupled to the voltage-boosting member 6 to supply the energy necessary for the operation of the wireless transmission member 3.
  • the power supply circuit comprises, between the sensor 7 and the power supply circuit, a main non-return member 14 such as a non-return diode.
  • the measurement current I passes through the circuit comprising the first capacitor 5 connected in parallel with the voltage limiting member.
  • the voltage limiter member 10 limits the voltage swing to protect the first capacitance.
  • the first capacitor 5 is charged by this current to its nominal voltage, which corresponds to the voltage of the voltage limiter member.
  • the first capacitor 5 can supply both the electronic logic 2 managing the device and the voltage raising member 6 for supplying the transmission member 3.
  • the voltage boosting member 6 is selectively switchable.
  • the data transmission by the transmission member 3 is performed in blocks, that is to say, intermittently and determined.
  • the voltage-boosting member 6 is selectively switchable by the electronic logic 2 between a first power supply position of the transmission member 3 and a second non-power supply position of the transmission member 3
  • the transmission member 6 is powered only a fraction of the time, which limits the average power consumed to a value less than the value of the available power.
  • the energy extraction of the first capacitance 5 obviously results in a drop in its voltage across the latter.
  • the voltage boosting member 6 makes it possible to compensate for this drop in voltage in order to always maintain the voltage delivered to the transmission member 3 in the required power supply range.
  • a second optional capacitance 11 may be provided. This configuration increases the operational safety of the assembly.
  • This optional second capacitor 11 may be provided in parallel with the first capacitor 5 and with the electronic logic 2, to continuously supply the electronic logic 2.
  • an auxiliary anti-return member 12 such as a diode arranged in series with the second capacitor 11 and the electronic logic 2. This auxiliary anti-return member 12 is provided to prevent the return of the second capacitance current 11 or the electronic logic 2 to the first capacitor 5.
  • the power supply circuit further comprises an electrical resistor 13, the electronic logic 2 being connected across the resistor 13 and being configured to measure the voltage and / or the loop current across the resistor 13.
  • This resistance 13 is preferably disposed downstream of the sensor 7 and the voltage limiter member.
  • the electronic logic 2 is preferably chosen to have a very high impedance in the circuit which connects it with the downstream of the resistor 13, so that the current flowing in the resistor 13 is very close to the loop current to be measured.
  • the resistor 13 provided for measuring the loop current I is preferably arranged downstream of the supply circuit (the term downstream refers to the direction of the current I represented by an arrow in the figure).
  • the voltage deployed across the resistor 13, which is proportional to the loop current, can then be measured by the electronic logic 2.
  • the device can be used in particular to ensure the periodic measurement of a loop current, the possible calculation of an average, the recording at a programmable frequency and the transmission at a given rate of this information.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmitters (AREA)

Abstract

The device (1) has a wireless modem (3) electronically connected to a microcontroller (2), and a power supply circuit connected to the wireless modem and the microcontroller. The power supply circuit has a measurement loop (4) and a capacitor (5) connected in parallel with the loop and with the microcontroller for supplying power to the microcontroller. The capacitor is connected to the wireless modem via a voltage booster (6) e.g. direct current (DC)/DC converter, for supplying power to the wireless modem from the loop via the capacitor and the voltage booster.

Description

La présente invention concerne un dispositif de transmission d'un signal à distance.The present invention relates to a device for transmitting a remote signal.

L'invention concerne plus particulièrement un dispositif de transmission d'un signal à distance, notamment de transmission d'un signal par radiofréquence, comprenant une logique électronique tel qu'un microcontrôleur, un organe de transmission de données sans fil tel qu'un modem relié à la logique électronique, un circuit d'alimentation électrique relié à la logique électronique et à l'organe de transmission.The invention more particularly concerns a device for transmitting a remote signal, in particular for transmitting a signal by radio frequency, comprising an electronic logic such as a microcontroller, a wireless data transmission member such as a modem connected to the electronic logic, a power supply circuit connected to the electronic logic and the transmission member.

La télétransmission de mesures, par exemple via les réseaux radiofréquence, est un besoin croissant dans l'industrie. Cette technologie se heurte cependant pratiquement à un obstacle concernant l'alimentation des dispositifs de transmission. En effet, le câblage d'une alimentation spécifique est souvent prohibitif et l'utilisation d'alimentation par pile pose évidemment un problème de maintenance régulière, lui aussi prohibitif.Teletransmission of measurements, for example via radiofrequency networks, is a growing need in the industry. However, this technology is practically hindered by an obstacle concerning the power supply of the transmission devices. Indeed, the wiring of a specific power supply is often prohibitive and the use of battery power obviously poses a problem of regular maintenance, also prohibitive.

Un but de la présente invention est de pallier tout ou partie des inconvénients de l'art antérieur relevés ci-dessus.An object of the present invention is to overcome all or part of the disadvantages of the prior art noted above.

A cette fin, le dispositif selon l'invention, par ailleurs conforme à la définition générique qu'en donne le préambule ci-dessus, est essentiellement caractérisé en ce que le circuit d'alimentation électrique comprend une boucle de mesure et une première capacité, la première capacité étant reliée en parallèle avec une boucle de mesure et également avec la logique électronique pour alimenter électriquement la logique électronique à partir du courant issu de la boucle de mesure via la première capacité, la première capacité étant également reliée à l'organe de transmission via un organe élévateur de tension, pour alimenter électriquement sélectivement l'organe de transmission à partir du courant issu de la boucle de mesure via la première capacité et l'organe élévateur de tension.

  • la boucle de mesure comprend un capteur d'une grandeur physique tel qu'un capteur de pression, le capteur comprenant un émetteur convertissant la valeur de la mesure de la grandeur physique réalisée par le capteur en un courant électrique, la boucle de mesure comprenant en outre un récepteur et une alimentation électrique de l'émetteur du capteur,
  • la boucle de courant est une boucle de courant 4-20mA,
  • la première capacité est montée en parallèle avec un organe limiteur de tension, tel qu'une diode zener,
  • la logique électronique est configurée pour commander l'envoi sélectif de données par l'organe de transmission de façon intermittente et en ce que l'organe de transmission de façon est alimenté électriquement de façon intermittente,
  • l'organe élévateur de tension est sélectivement commutable par la logique électronique entre une première position d'alimentation électrique de l'organe de transmission et une seconde position de non alimentation électrique de l'organe de transmission,
  • l'organe élévateur de tension est configuré pour délivrer sélectivement à l'organe de transmission une tension d'alimentation supérieure à un seuil déterminé quelle que soit sa tension en entrée fournie par la première capacité,
  • le circuit d'alimentation électrique comprend une seconde capacité disposée en parallèle avec la première capacité et avec la logique électronique, pour alimenter en continu la logique électronique,
  • le dispositif comprend un organe anti-retour auxiliaire, tel qu'une diode, disposé en série avec la seconde capacité et la logique électronique, l'organe anti-retour de courant auxiliaire étant prévu pour empêcher le retour du courant de seconde capacité ou de la logique électronique vers la première capacité,
  • le circuit d'alimentation électrique comprend une résistance électrique, la logique électronique étant raccordées aux bornes de la résistance électrique et étant configurée pour mesurer la tension et/ou le courant de boucle aux bornes de la résistance,
  • le circuit d'alimentation électrique comprend, entre le capteur et le circuit d'alimentation électrique, un organe anti-retour de courant principal tel qu'une diode anti-retour
  • la logique électronique est configurée pour interrompre immédiatement le fonctionnement de l'organe élévateur lorsque la tension d'alimentation de la logique électronique est inférieure à un seuil déterminé, de façon à garantir un fonctionnement permanent ou quasi permanent de cette logique électronique.
For this purpose, the device according to the invention, moreover, in accordance with the generic definition given in the preamble above, is essentially characterized in that the power supply circuit comprises a measuring loop and a first capacitor, the first capacitor being connected in parallel with a measurement loop and also with the electronic logic for electrically supplying the electronic logic from the current coming from the measurement loop via the first capacitor, the first capacitor being also connected to the capacitor transmission via a voltage booster, for selectively powering the transmission member from the current from the measurement loop via the first capacitance and the voltage booster.
  • the measurement loop comprises a sensor of a physical quantity such as a pressure sensor, the sensor comprising a transmitter converting the value of the measurement of the physical quantity produced by the sensor into an electric current, the measuring loop comprising in in addition to a receiver and a power supply of the sensor transmitter,
  • the current loop is a 4-20mA current loop,
  • the first capacitor is connected in parallel with a voltage limiting device, such as a zener diode,
  • the electronic logic is configured to control the selective transmission of data by the transmission member intermittently and in that the transmission means is intermittently electrically powered,
  • the voltage booster is selectively switchable by the electronic logic between a first power supply position of the transmission member and a second non-power supply position of the transmission member,
  • the voltage booster is configured to selectively deliver to the transmission member a supply voltage greater than a determined threshold regardless of its input voltage supplied by the first capacitor,
  • the power supply circuit comprises a second capacitor disposed in parallel with the first capacitor and with the electronic logic, for continuously supplying the electronic logic,
  • the device comprises an auxiliary non-return member, such as a diode, arranged in series with the second capacitor and the electronic logic, the auxiliary current non-return member being provided to prevent the return of the second capacity current or the electronic logic to the first capacity,
  • the power supply circuit comprises an electrical resistor, the electronic logic being connected across the electrical resistance and being configured to measure the voltage and / or the loop current across the resistor,
  • the power supply circuit comprises, between the sensor and the power supply circuit, a main current non-return device such as a non-return diode
  • the electronic logic is configured to immediately stop the operation of the elevator member when the supply voltage of the electronic logic is below a predetermined threshold, so as to ensure a permanent or almost permanent operation of this electronic logic.

L'invention peut concerner également tout dispositif ou procédé alternatif comprenant toute combinaison des caractéristiques ci-dessus ou ci-dessous.The invention may also relate to any alternative device or method comprising any combination of the above or below features.

D'autres particularités et avantages apparaîtront à la lecture de la description ci-après, faite en référence à la figure unique qui représente de façon schématique et partielle un dispositif de transmission selon un exemple de réalisation possible de l'invention.Other features and advantages will appear on reading the description below, with reference to the single figure which shows schematically and partially a transmission device according to a possible embodiment of the invention.

Le dispositif de transmission d'un signal à distance, notamment transmission d'un signal par radiofréquence, comprend une logique 2 électronique tel qu'un microcontrôleur et un organe 3 de transmission de données sans fil tel qu'un modem. Par exemple, l'organe 3 de transmission est un modem GSM intégré et la logique 2 électronique est un microcontrôleur.The device for transmitting a remote signal, in particular transmission of a radio frequency signal, comprises an electronic logic 2 such as a microcontroller and a wireless data transmission member 3 such as a modem. For example, the transmission member 3 is an integrated GSM modem and the electronic logic 2 is a microcontroller.

L'organe 3 de transmission est relié à la logique 2 électronique.The transmission member 3 is connected to the electronic logic 2.

Un circuit d'alimentation électrique est également relié à la logique 2 électronique et à l'organe 3 de transmission. Ce circuit d'alimentation électrique comprend une boucle 4 de courant, par exemple une boucle de courant 4-20mA et une première capacité 5 électrique.A power supply circuit is also connected to the electronic logic 2 and the transmission member 3. This power supply circuit comprises a current loop 4, for example a 4-20 mA current loop and a first electrical capacitance.

Classiquement, la boucle 4 de courant peut comprendre un capteur 7 d'une grandeur physique tel qu'un capteur de pression. La boucle de courant comprend en outre, par exemple associé au capteur 7, un émetteur convertissant la valeur de la mesure de la grandeur physique réalisée par le capteur 7 en un courant électrique compris entre 4 et 20A. La boucle 4 de courant comprend en outre un récepteur 9 et une alimentation 8 électrique de l'émetteur du capteur 7. Le récepteur 9 et l'alimentation 8 électrique peuvent être situés dans une installation électrique déportée (représentée symboliquement en pointillés à la figure).Conventionally, the current loop 4 may comprise a sensor 7 of a physical quantity such as a pressure sensor. The current loop further comprises, for example associated with the sensor 7, a transmitter converting the value of the measurement of the physical quantity made by the sensor 7 into an electric current between 4 and 20A. The current loop 4 further comprises a receiver 9 and an electrical supply 8 of the transmitter of the sensor 7. The receiver 9 and the power supply 8 can be located in a remote electrical installation (represented symbolically in dotted lines in the figure) .

La première capacité 5 est de préférence montée en parallèle avec un organe 10 limiteur de tension, tel qu'une diode zener. L'organe 10 limiteur de tension est situé de préférence sur la boucle de mesure.The first capacitor 5 is preferably connected in parallel with a voltage limiting member, such as a zener diode. The voltage limiter member 10 is preferably located on the measuring loop.

La première capacité 5 électrique est par exemple une supercapacité adaptée pour stocker assez d'énergie utile pour assurer une transmission fiable. Par exemple, la première capacité 5 a valeur comprise entre 100F et 1000F (farads).The first electrical capacity is for example a supercapacity adapted to store enough useful energy to ensure reliable transmission. For example, the first capacitance 5 has a value between 100F and 1000F (farads).

La première capacité 5 est reliée en parallèle à la boucle 4 de courant et également à la logique 2 électronique, pour alimenter électriquement la logique 2 électronique à partir du courant issu de la boucle 4 de mesure via la première capacité 5.The first capacitor 5 is connected in parallel with the current loop 4 and also with the electronic logic 2, to electrically power the electronic logic 2 from the current coming from the measurement loop 4 via the first capacitor 5.

La première capacité 5 est également reliée à l'organe 3 de transmission via un organe 6 élévateur de tension, pour alimenter électriquement sélectivement l'organe 3 de transmission à partir du courant issu de la boucle 4 de mesure via la première capacité 5 et l'organe 6 élévateur de tension. L'organe 6 élévateur de tension est par exemple un convertisseur électrique DC/DC tel qu'un « booster », par exemple un convertisseur à découpage équipé d'une inductance.The first capacitor 5 is also connected to the transmission member 3 via a voltage booster member 6, for selectively powering the transmission member 3 from the current coming from the measurement loop 4 via the first capacitor 5 and the first capacitor 5. 6 voltage booster. The voltage boosting member 6 is for example a DC / DC electric converter such as a "booster", for example a switching converter equipped with an inductor.

Selon une caractéristique avantageuse, le dispositif réalise ainsi une accumulation de l'énergie disponible dans une boucle de courant 4-20mA en vue d'alimenter sélectivement un organe 3 de transmission pouvant consommer sensiblement plus que le courant disponible. En effet, selon la mesure réalisée par le capteur 7, le courant disponible peut descendre à 4 mA dans une boucle de courant 4-20mA.According to an advantageous characteristic, the device thus achieves an accumulation of the available energy in a 4-20mA current loop in order to selectively feed a transmission member 3 that can consume substantially more than the available current. Indeed, according to the measurement made by the sensor 7, the available current can go down to 4 mA in a 4-20mA current loop.

La première capacité 5 est couplée électriquement à l'organe 6 élévateur de tension pour fournir l'énergie nécessaire au fonctionnement de l'organe 3 de transmission sans fil.The first capacitor 5 is electrically coupled to the voltage-boosting member 6 to supply the energy necessary for the operation of the wireless transmission member 3.

De préférence le circuit d'alimentation électrique comprend, entre le capteur 7 et le circuit d'alimentation électrique, un organe 14 anti-retour principal tel qu'une diode anti-retour.Preferably the power supply circuit comprises, between the sensor 7 and the power supply circuit, a main non-return member 14 such as a non-return diode.

En fonctionnement, le courant I de mesure traverse le circuit comprenant la première capacité 5 montée en parallèle avec l'organe 10 limiteur de tension. L'organe 10 limiteur de tension limite l'excursion en tension afin de protéger la première capacité.In operation, the measurement current I passes through the circuit comprising the first capacitor 5 connected in parallel with the voltage limiting member. The voltage limiter member 10 limits the voltage swing to protect the first capacitance.

En mode stabilisé, la première capacité 5 est chargée par ce courant à sa tension nominale, qui correspond à la tension de l'organe 10 limiteur de tension. La première capacité 5 peut alimenter à la fois le la logique 2 électronique assurant la gestion du dispositif et l'organe 6 élévateur de tension permettant l'alimentation de l'organe 3 de transmission. De préférence, l'organe 6 élévateur de tension est sélectivement commutable. Ainsi, de préférence, la transmission de données par l'organe 3 de transmission est réalisée par blocs, c'est-à-dire de façon intermittente et déterminée. Par exemple, l'organe 6 élévateur de tension est sélectivement commutable par la logique 2 électronique entre une première position d'alimentation électrique de l'organe 3 de transmission et une seconde position de non alimentation électrique de l'organe 3 de transmissionIn stabilized mode, the first capacitor 5 is charged by this current to its nominal voltage, which corresponds to the voltage of the voltage limiter member. The first capacitor 5 can supply both the electronic logic 2 managing the device and the voltage raising member 6 for supplying the transmission member 3. Preferably, the voltage boosting member 6 is selectively switchable. Thus, preferably, the data transmission by the transmission member 3 is performed in blocks, that is to say, intermittently and determined. For example, the voltage-boosting member 6 is selectively switchable by the electronic logic 2 between a first power supply position of the transmission member 3 and a second non-power supply position of the transmission member 3

De cette façon, l'organe 6 de transmission n'est alimenté qu'une fraction du temps ce qui permet de limiter la puissance moyenne consommée à une valeur inférieure à la valeur de la puissance disponible.In this way, the transmission member 6 is powered only a fraction of the time, which limits the average power consumed to a value less than the value of the available power.

L'extraction d'énergie de la première capacité 5 se traduit évidemment par une baisse de sa tension aux bornes de cette dernière. L'organe 6 élévateur de tension permet justement de compenser cette baisse de tension afin de maintenir toujours la tension délivrée à l'organe 3 de transmission dans la plage d'alimentation requise.The energy extraction of the first capacitance 5 obviously results in a drop in its voltage across the latter. The voltage boosting member 6 makes it possible to compensate for this drop in voltage in order to always maintain the voltage delivered to the transmission member 3 in the required power supply range.

Afin d'assurer un fonctionnement continu de la logique 2 électronique, y compris en l'absence de courant de mesure I, une seconde capacité 11 facultative peut être prévue. Cette configuration augmente la sécurité de fonctionnement de l'ensemble.In order to ensure continuous operation of the electronic logic 2, even in the absence of measurement current I, a second optional capacitance 11 may be provided. This configuration increases the operational safety of the assembly.

Cette seconde capacité 11 facultative peut être prévue en parallèle avec la première capacité 5 et avec la logique 2 électronique, pour alimenter en continu la logique 2 électronique. Dans ce cas, un organe 12 anti-retour auxiliaire tel qu'une diode disposé en série avec la seconde capacité 11 et la logique 2 électronique. Cet organe 12 anti-retour auxiliaire est prévu pour empêcher le retour du courant de seconde capacité 11 ou de la logique 2 électronique vers la première capacité 5.This optional second capacitor 11 may be provided in parallel with the first capacitor 5 and with the electronic logic 2, to continuously supply the electronic logic 2. In this case, an auxiliary anti-return member 12 such as a diode arranged in series with the second capacitor 11 and the electronic logic 2. This auxiliary anti-return member 12 is provided to prevent the return of the second capacitance current 11 or the electronic logic 2 to the first capacitor 5.

Le circuit d'alimentation électrique comprend de plus une résistance 13 électrique, la logique 2 électronique étant raccordées aux bornes de la résistance 13 électrique et étant configurée pour mesurer la tension et/ou le courant de boucle aux bornes de la résistance 13. Cette résistance 13 est disposée de préférence en aval du capteur 7 et de l'organe 10 limiteur de tension. La logique 2 électronique est choisie de préférence pour avoir une très forte impédance dans le circuit qui la relie avec l'aval de la résistance 13, ceci afin que le courant circulant dans la résistance 13 soit très proche du courant de boucle à mesurer.The power supply circuit further comprises an electrical resistor 13, the electronic logic 2 being connected across the resistor 13 and being configured to measure the voltage and / or the loop current across the resistor 13. This resistance 13 is preferably disposed downstream of the sensor 7 and the voltage limiter member. The electronic logic 2 is preferably chosen to have a very high impedance in the circuit which connects it with the downstream of the resistor 13, so that the current flowing in the resistor 13 is very close to the loop current to be measured.

La résistance 13 prévue pour assurer la mesure du courant I de boucle est de préférence disposée en aval du circuit d'alimentation (le terme en aval fait référence au sens du courant I représenté par une flèche à la figure).The resistor 13 provided for measuring the loop current I is preferably arranged downstream of the supply circuit (the term downstream refers to the direction of the current I represented by an arrow in the figure).

La tension déployée aux bornes de la résistance 13, qui est proportionnelle au courant de boucle, peut alors être mesurée par la logique 2 électronique.The voltage deployed across the resistor 13, which is proportional to the loop current, can then be measured by the electronic logic 2.

Le dispositif peut être utilisé notamment pour assurer la mesure périodique d'un courant de boucle, le calcul éventuel d'une moyenne, l'enregistrement à une fréquence programmable et la transmission à une cadence déterminée de ces informations.The device can be used in particular to ensure the periodic measurement of a loop current, the possible calculation of an average, the recording at a programmable frequency and the transmission at a given rate of this information.

Claims (12)

Dispositif de transmission d'un signal à distance, notamment de transmission d'un signal par radiofréquence, comprenant une logique (2) électronique tel qu'un microcontrôleur, un organe (3) de transmission de données sans fil tel qu'un modem relié à la logique (2) électronique, un circuit d'alimentation électrique relié à la logique (2) électronique et à l'organe (3) de transmission, caractérisé en ce que le circuit d'alimentation électrique comprend une boucle (4) de mesure et une première capacité (5), la première capacité (5) étant reliée en parallèle avec une boucle (4) de mesure et également avec la logique (2) électronique pour alimenter électriquement la logique (2) électronique à partir du courant issu de la boucle (4) de mesure via la première capacité (5), la première capacité (5) étant également reliée à l'organe (3) de transmission via un organe (6) élévateur de tension, pour alimenter électriquement sélectivement l'organe (3) de transmission à partir du courant issu de la boucle (4) de mesure via la première capacité (5) et l'organe (6) élévateur de tension.Device for transmitting a remote signal, in particular for transmitting a signal by radiofrequency, comprising an electronic logic (2) such as a microcontroller, a wireless data transmission member (3) such as a connected modem to the electronic logic (2), a power supply circuit connected to the electronic logic (2) and to the transmission member (3), characterized in that the power supply circuit comprises a loop (4) of measuring and a first capacitor (5), the first capacitor (5) being connected in parallel with a measuring loop (4) and also with the electronic logic (2) for electrically feeding the electronic logic (2) from the current of the measurement loop (4) via the first capacitor (5), the first capacitor (5) being also connected to the transmission member (3) via a voltage-raising member (6), for selectively energizing the organ (3) of tran smission from the current from the loop (4) measurement via the first capacitance (5) and the member (6) voltage booster. Dispositif selon la revendication 1, caractérisé en ce que la boucle (4) de mesure comprend un capteur (7) d'une grandeur physique tel qu'un capteur de pression, le capteur (7) comprenant un émetteur convertissant la valeur de la mesure de la grandeur physique réalisée par le capteur (7) en un courant électrique, la boucle (4) de mesure comprenant en outre un récepteur (9) et une alimentation (8) électrique de l'émetteur du capteur (7).Device according to claim 1, characterized in that the measuring loop (4) comprises a sensor (7) of a physical quantity such as a pressure sensor, the sensor (7) comprising a transmitter converting the value of the measurement the physical quantity realized by the sensor (7) in an electric current, the measuring loop (4) further comprising a receiver (9) and an electric power supply (8) of the sensor transmitter (7). Dispositif selon la revendication 1 ou 2, caractérisé en ce que la boucle (4) de courant est une boucle de courant 4-20mA.Device according to Claim 1 or 2, characterized in that the current loop (4) is a 4-20mA current loop. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la première capacité (5) est montée en parallèle avec un organe (10) limiteur de tension, tel qu'une diode zener.Device according to any one of claims 1 to 3, characterized in that the first capacitor (5) is connected in parallel with a voltage limiting member (10), such as a zener diode. Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la logique (2) électronique est configurée pour commander l'envoi sélectif de données par l'organe (3) de transmission de façon intermittente et en ce que l'organe (3) de transmission de façon est alimenté électriquement de façon intermittente.Device according to any one of claims 1 to 4, characterized in that the electronic logic (2) is configured to control the selective transmission of data by the transmission member (3) intermittently and that the transmission means (3) is intermittently electrically powered. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'organe (6) élévateur de tension est sélectivement commutable par la logique (2) électronique entre une première position d'alimentation électrique de l'organe (3) de transmission et une seconde position de non alimentation électrique de l'organe (3) de transmission.Device according to any one of claims 1 to 5, characterized in that the voltage-lifting member (6) is selectively switchable by the electronic logic (2) between a first power supply position of the member (3) transmission and a second position of non-power supply of the transmission member (3). Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'organe (6) élévateur de tension est configuré pour délivrer sélectivement à l'organe (3) de transmission une tension d'alimentation supérieure à un seuil déterminé quelle que soit sa tension en entrée fournie par la première capacité (5).Device according to any one of claims 1 to 6, characterized in that the voltage-lifting member (6) is configured to selectively deliver to the transmission member (3) a supply voltage greater than a determined threshold which whatever its input voltage supplied by the first capacitor (5). Dispositif selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le circuit d'alimentation électrique comprend une seconde capacité (11) disposée en parallèle avec la première capacité (5) et avec la logique (2) électronique, pour alimenter en continu la logique (2) électronique.Device according to any one of claims 1 to 7, characterized in that the power supply circuit comprises a second capacitor (11) arranged in parallel with the first capacitor (5) and with the electronic logic (2), to supply continuous logic (2) electronic. Dispositif selon la revendication 8, caractérisé en ce qu'il comprend un organe (12) anti-retour auxiliaire, tel qu'une diode, disposé en série avec la seconde capacité (11) et la logique (2) électronique, l'organe (12) anti-retour de courant auxiliaire étant prévu pour empêcher le retour du courant de seconde capacité (11) ou de la logique (2) électronique vers la première capacité (5).Device according to claim 8, characterized in that it comprises an auxiliary anti-return member (12), such as a diode, arranged in series with the second capacitor (11) and the electronic logic (2), the organ (12) auxiliary current back-off is provided to prevent the return of the second capacitance current (11) or logic (2) electronics to the first capacitance (5). Dispositif selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le circuit d'alimentation électrique comprend une résistance (13) électrique, la logique (2) électronique étant raccordées aux bornes de la résistance (13) électrique et étant configurée pour mesurer la tension et/ou le courant de boucle aux bornes de la résistance (13).Device according to any one of claims 1 to 9, characterized in that the power supply circuit comprises an electric resistor (13), the electronic logic (2) being connected to the terminals of the electrical resistor (13) and being configured for measuring the voltage and / or the loop current across the resistor (13). Dispositif selon l'une quelconque des revendications 1 à 10, caractérisé en ce que le circuit d'alimentation électrique comprend, entre le capteur (7) et le circuit d'alimentation électrique, un organe (14) anti-retour de courant principal tel qu'une diode anti-retour.Device according to any one of claims 1 to 10, characterized in that the power supply circuit comprises, between the sensor (7) and the power supply circuit, a main current anti-return element (14) such as than a non-return diode. Dispositif selon l'une quelconque des revendications 1 à 11 caractérisé en ce que la logique (2) électronique est configurée pour interrompre immédiatement le fonctionnement de l'organe élévateur (6) lorsque la tension d'alimentation de la logique (2) électronique est inférieure à un seuil déterminé, de façon à garantir un fonctionnement permanent ou quasi permanent de cette logique (2) électronique.Device according to any one of Claims 1 to 11, characterized in that the electronic logic (2) is configured to immediately stop the operation of the lifting member (6) when the supply voltage of the electronic logic (2) is below a certain threshold, so as to ensure a permanent or almost permanent operation of this logic (2) electronic.
EP20120180395 2011-09-07 2012-08-14 Device for transmitting a signal, in particular a radio frequency signal Active EP2568458B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1157904A FR2979776B1 (en) 2011-09-07 2011-09-07 DEVICE FOR TRANSMITTING A REMOTE SIGNAL, IN PARTICULAR FOR RADIO FREQUENCY TRANSMISSION OF A SIGNAL

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EP2568458A1 true EP2568458A1 (en) 2013-03-13
EP2568458B1 EP2568458B1 (en) 2015-01-14

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4001798A (en) * 1975-09-18 1977-01-04 Rockwell International Corporation Self-contained sensor
US20070222584A1 (en) * 2001-10-11 2007-09-27 Enocean Gmbh Wireless sensor system
WO2009150562A1 (en) * 2008-06-11 2009-12-17 Koninklijke Philips Electronics N.V. Wireless sensor device and illumination system comprising such a device
CN201740836U (en) * 2010-06-23 2011-02-09 胡淼龙 Lightning arrester leakage current sensor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4001798A (en) * 1975-09-18 1977-01-04 Rockwell International Corporation Self-contained sensor
US20070222584A1 (en) * 2001-10-11 2007-09-27 Enocean Gmbh Wireless sensor system
WO2009150562A1 (en) * 2008-06-11 2009-12-17 Koninklijke Philips Electronics N.V. Wireless sensor device and illumination system comprising such a device
CN201740836U (en) * 2010-06-23 2011-02-09 胡淼龙 Lightning arrester leakage current sensor

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EP2568458B1 (en) 2015-01-14
FR2979776A1 (en) 2013-03-08
FR2979776B1 (en) 2013-09-27

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