EP1407955B1 - Communication system on-board a railway vehicle - Google Patents

Communication system on-board a railway vehicle Download PDF

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Publication number
EP1407955B1
EP1407955B1 EP03300060A EP03300060A EP1407955B1 EP 1407955 B1 EP1407955 B1 EP 1407955B1 EP 03300060 A EP03300060 A EP 03300060A EP 03300060 A EP03300060 A EP 03300060A EP 1407955 B1 EP1407955 B1 EP 1407955B1
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EP
European Patent Office
Prior art keywords
communication system
evaluation module
board
antenna
amplifier
Prior art date
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.)
Expired - Lifetime
Application number
EP03300060A
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German (de)
French (fr)
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EP1407955A1 (en
Inventor
M. Bernard Auge De Fleury
M. Didier Riffaud
Xavier Schneider
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Alstom Transport SA
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Alstom SA
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Publication of EP1407955A1 publication Critical patent/EP1407955A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
    • B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
    • B61L3/08—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically
    • B61L3/12—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves
    • B61L3/121—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves using magnetic induction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
    • B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
    • B61L3/08—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically
    • B61L3/12—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves
    • B61L3/121—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves using magnetic induction
    • B61L2003/123—French standard for inductive train protection, called "Contrôle de vitesse par balises" [KVB]

Definitions

  • the invention relates to a communication system on board a railway vehicle for transmitting information with beacons arranged on the ground and relates in particular to a communication system for trams.
  • the transmission chain usually consists of an on-board antenna associated with an amplifier / adapter box comprising, at the output, links for the transmission of signals from or towards the antenna, these links being connected to an antenna.
  • interface card of an evaluation module carrying out the data processing.
  • Such an amplifier / adapter box is supplied with electricity by power lines connected to a power supply unit of the vehicle.
  • Such communication systems are used in particular in speed control systems by tags, such as the KVB system used in France by the National railway Company (SNCF), each vehicle being informed when passing a beacon on the state of the signaling, a calculator of the evaluation module constantly checking that the speed of the vehicle is compatible with the signaling encountered and imposing if necessary an emergency stop.
  • tags such as the KVB system used in France by the National railway Company (SNCF)
  • SNCF National Railway Company
  • the SNCF requires that the distance between the vertical axis of the antenna and the axis of the front axle is not greater than 12 m.
  • Such a value may however vary according to the operating companies since it depends in particular on the location of the beacons on the ground in relation to the infrastructures.
  • FIG. figure 1 For vehicles exceeding the length of 24 m between axles, it is known to double the entire on-board communication system as it is represented in FIG. figure 1 .
  • each car is then equipped with an antenna 21 arranged at a distance d ⁇ 12 m from the front axle 11.
  • the antenna 21 is associated with an amplifier / adapter box 22 from which are output connecting son 6 which are connected to an interface board of an evaluation module 3 on board the car 10.
  • Each amplifier / adapter box 22 is electrically powered by power lines 5 connected to a power card present in the evaluation module, this card itself being powered by a power unit 9 disconnectable by means of a switch 7.
  • the evaluation module 3 of each car is connected to a panel of visualization 8 on which are displayed the various information communicated to the passage of the tags 1 and including any emergency stop orders.
  • an object of the present invention is to provide a communication system that can operate with two antennas distant from each other and that is simple and economical to achieve.
  • the subject of the invention is a communication system on board a railway vehicle for transmitting information with beacons arranged on the ground, characterized in that it comprises two transmission chains each consisting of antenna associated with an amplifier / adapter box, the transmission chains being connected to the same evaluation module ensuring the processing of the signals picked up or transmitted by one of the antennas when passing the beacons, each amplifier / adapter box being powered electrically by a same power unit and comprising connecting son intended to be connected to an interface board of the evaluation module and in that the system comprises switching means for alternately connecting the interface board of the evaluation module to the wires. link of one or the other of the transmission chains, the antenna belonging to the transmission chain don t the connecting wires are not connected to the interface board by the switching means being placed in an inactive state so as to have a limited power consumption.
  • the invention also relates to a railway vehicle characterized in that it comprises a communication system as previously described.
  • the figure 2 trolley consists of two cars 10, these cars 10 having a common central axle 12 and a front axle 11 arranged near the end of the car 10.
  • the tramway is equipped with a beacon speed control system that uses a communication system for exchanging information with tags 1 disposed on the ground.
  • This communication system comprises two ground / tram transmission lines 2, distributed on the two cars 10, which are intended to be used alternately depending on the direction of travel of the tram.
  • the two transmission chains 2 are connected to a single evaluation module 3 carried by one of the cars 10, this module 3 processing data received or transmitted through of the two chains of transmission 2 with the passage of the beacons 1.
  • the evaluation module 3 further comprises, in the case of the speed control by beacons, a computer which verifies that the speed of the vehicle is in accordance with the signal indications communicated by the beacons 1 and transmits driving information to the panels. 8 at each end of the tram in a driver's cab.
  • each transmission chain 2 of the communication system is carried by one of the cars 10 and is constituted by an adapter / amplifier box 22 associated with an antenna 21 which is arranged under the car at a distance of less than 12 m from the axis of the front axle 11.
  • These antennas 21 associated with their adapter / amplifier box 22 are for example in accordance with those used usually in the KVB system for controlling the speed of the SNCF, the adapter / amplifier box 22 being connected. on the antenna by cables of link 23 with a length of about 6 m, the antenna 21 emitting at a wavelength of 27 MHz and receiving signals at a wavelength of 4.35 MHz.
  • each adapter / amplifier box 22 is supplied with electricity by two continuous supply lines 0 and 12 V for transmission and two supply lines 0 and 12 V continuously for reception, these lines being represented by a single line 5 on the figures 2 and 3 to simplify the figures.
  • the supply lines 5 are connected to a power supply card 31 of the evaluation module 3 which is itself powered by a supply unit 9 of the tram.
  • the supply lines 5 of the two housings 22 are connected directly to the power supply board 31 of the evaluation module 3, the supply lines 5 of equivalent voltage of the two housings 22 being connected in parallel, no relay being present on the supply lines 5 between the power supply unit 9 and the adapter / amplifier box 22.
  • Each adapter / amplifier box 22 also comprises five links transmitting the signals picked up or transmitted by the antenna, these links being represented by a single wire 6 on the figures 2 and 3 .
  • the connection wires 6 are connected to a switching module 4 comprising a relay 41 for each of the connecting wires 6 coming from the housings 22 of the two transmission chains 2.
  • These relays 41 whose guaranteed mechanical characteristics allow a safe control of their state, connect the connecting wires 6 from the housings 22 of the two transmission chains 2 to either an interface card 32 belonging to the evaluation module 3, or to a plug card 42 belonging to the switching module 4.
  • the various relays 41 of the switching module 4 have dependent switching commands so that when the connecting wires 6 of one of the housings 22 are connected with the interface board 32 of the evaluation module 3, the connecting wires 6 of the other housing 22 are connected to the plug board 42.
  • the interface board 32 of the evaluation module 3 is connected to a computer which processes the data and prepares the driving information signals on the display panels 8.
  • the plug card 42 has a structure equivalent to the interface board 32 of the evaluation module 3 and makes it possible to charge with a suitable impedance the connecting son 6 connected to it so that the latter do not behave like antennas disturbing the signals transmitted by the transmission chain 2 which is connected to the evaluation module 3.
  • the plug card 42 further comprises means ensuring the inactive position of the antenna 21 associated with the housing 22 which is connected to it so that the antenna 21 has a limited power consumption while being switched off on transmission and on reception.
  • this inactive setting of the antenna is carried out by simply crossing two of the connection wires 6 at the input of the plug card 42 by relative to the equivalent connections of the connecting wires 6 on the interface board 32.
  • the communication system thus produced will advantageously be equipped with a standard power supply card 31 usually designed to feed a single antenna 21.
  • the power supply card 31 simultaneously powers the two housings 22, the latter are respectively connected an active antenna 21 and an antenna 21 inactive.
  • the housing 22 associated with the inactive antenna 21 consumes very little energy and the power consumed by this housing 22 is negligible compared to the power demanded by the housing 22 connected to the antenna 21 active, which allows to use a usual power supply card 31, that is to say power slightly greater than the power consumed by a single housing 22 associated with an active antenna 21.
  • Such a communication system is particularly advantageous because it makes it possible, by means of the relays, to select one or the other of the two transmission chains to be connected to the evaluation module according to the direction of circulation of the tramway while having voltage drops in the supply lines minimized to the maximum since no switching element is placed on the supply lines.
  • the inter-antenna distance is limited by the voltage losses in the supply lines, too great a distance between the power unit and the adapter / amplifier box leading to a insufficient power at the level of these.
  • such a system makes it possible to offer the inter-antenna distance closest to the theoretical maximum value for a given power of the power unit.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

The communication system comprises two transmission chains (2) each constituted by an antenna (21) connected to an amplifier box (22). The chains are connected to the same evaluation module (3) ensuring the processing of captured or transmitted signals by one of the antennas passing to the beacons. Each amplifier box is electrically supplied by the same supply unit (9) and comprises a connecting wires (6) intended to be connected to the interface module interface card (32). The system comprises switches (41) enabling to alternately connect the interface card to the connection wires of one or other of the transmission chains.

Description

L'invention se rapporte à un système de communication embarqué à bord d'un véhicule ferroviaire permettant la transmission d'informations avec des balises disposées au sol et se rapporte notamment à un système de communication pour tramway.The invention relates to a communication system on board a railway vehicle for transmitting information with beacons arranged on the ground and relates in particular to a communication system for trams.

Il est connu d'utiliser à bord des véhicules ferroviaires des systèmes de communication comportant une chaîne de transmission sol/véhicule permettant l'échange de données avec des balises au sol. Dans un tel système, la chaîne de transmission est habituellement constituée d'une antenne embarquée associée à un boîtier amplificateur/adaptateur comportant en sortie des liaisons pour la transmission des signaux en provenance ou en direction de l'antenne, ces liaisons étant reliés à une carte interface d'un module d'évaluation réalisant le traitement des données. Un tel boîtier amplificateur/adaptateur est alimenté en électricité par des lignes d'alimentation connectées à une unité d'alimentation du véhicule.It is known to use on board railway vehicles communication systems comprising a ground / vehicle transmission chain for exchanging data with beacons on the ground. In such a system, the transmission chain usually consists of an on-board antenna associated with an amplifier / adapter box comprising, at the output, links for the transmission of signals from or towards the antenna, these links being connected to an antenna. interface card of an evaluation module carrying out the data processing. Such an amplifier / adapter box is supplied with electricity by power lines connected to a power supply unit of the vehicle.

De tels systèmes de communication sont notamment utilisés dans des systèmes de contrôle de la vitesse par balises, tel que le système KVB utilisé en France par la Société Nationale des Chemins de Fer (SNCF), chaque véhicule étant informé au passage d'une balise sur l'état de la signalisation, un calculateur du module d'évaluation vérifiant constamment que la vitesse du véhicule est compatible avec la signalisation rencontrée et imposant si nécessaire un arrêt d'urgence. Toutefois, dans le cadre d'une telle utilisation sécuritaire, il est nécessaire de respecter des règles quant à l'emplacement de l'antenne sur le véhicule. En particulier, en France, la SNCF impose que la distance entre l'axe verticale de l'antenne et l'axe de l'essieu avant ne soit pas supérieure à 12 m. Une telle valeur peut cependant varier en fonction des sociétés d'exploitation puisqu'elle est fonction notamment de l'emplacement des balises au sol par rapport aux infrastructures.Such communication systems are used in particular in speed control systems by tags, such as the KVB system used in France by the National Railway Company (SNCF), each vehicle being informed when passing a beacon on the state of the signaling, a calculator of the evaluation module constantly checking that the speed of the vehicle is compatible with the signaling encountered and imposing if necessary an emergency stop. However, as part of such safe use, it is necessary to adhere to rules regarding the location of the antenna on the vehicle. In particular, in France, the SNCF requires that the distance between the vertical axis of the antenna and the axis of the front axle is not greater than 12 m. Such a value may however vary according to the operating companies since it depends in particular on the location of the beacons on the ground in relation to the infrastructures.

Compte tenu de cette contrainte imposée par la SNCF, il s'ensuit que pour un véhicule circulant dans les deux sens, la distance entre essieux extrêmes de ce même véhicule ne peut pas dépasser 24 m lorsque le véhicule ne comporte qu'une seule antenne.Given this constraint imposed by the SNCF, it follows that for a vehicle traveling in both directions, the distance between the extreme axles of the same vehicle can not exceed 24 m when the vehicle has only one antenna.

Ainsi, pour les véhicules dépassant la longueur de 24 m entre essieux, il est connu de doubler l'ensemble du système de communication embarqué ainsi que cela est représenté à la figure 1. Conformément à cette figure qui représente un tramway comportant deux voitures 10, chaque voiture est alors équipée d'une antenne 21 disposée à une distance d ≤ 12 m de l'essieu avant 11. L'antenne 21 est associée à un boîtier amplificateur/adaptateur 22 d'où sortent des fils de liaison 6 qui sont reliés à une carte interface d'un module d'évaluation 3 embarqué sur la voiture 10. Chaque boîtier amplificateur/adaptateur 22 est alimenté électriquement par des lignes d'alimentation 5 raccordées à une carte d'alimentation présente dans le module d'évaluation, cette carte étant elle-même alimentée par une unité d'alimentation 9 déconnectable au moyen d'un interrupteur 7. Le module d'évaluation 3 de chaque voiture est relié à un panneau de visualisation 8 sur lequel sont affichées les différentes informations communiquées au passage des balises 1 et notamment les éventuels ordres d'arrêt d'urgence.Thus, for vehicles exceeding the length of 24 m between axles, it is known to double the entire on-board communication system as it is represented in FIG. figure 1 . In accordance with this figure which represents a trolley with two cars 10, each car is then equipped with an antenna 21 arranged at a distance d ≤ 12 m from the front axle 11. The antenna 21 is associated with an amplifier / adapter box 22 from which are output connecting son 6 which are connected to an interface board of an evaluation module 3 on board the car 10. Each amplifier / adapter box 22 is electrically powered by power lines 5 connected to a power card present in the evaluation module, this card itself being powered by a power unit 9 disconnectable by means of a switch 7. The evaluation module 3 of each car is connected to a panel of visualization 8 on which are displayed the various information communicated to the passage of the tags 1 and including any emergency stop orders.

Une telle solution présente cependant l'inconvénient de doubler le coût du système de communication embarqué en doublant le module d'évaluation.Such a solution however has the disadvantage of doubling the cost of the onboard communication system by doubling the evaluation module.

Aussi, un but de la présente invention est de proposer un système de communication qui puissent fonctionner avec deux antennes distantes l'une de l'autre et qui soit simple et économique à réaliser.Also, an object of the present invention is to provide a communication system that can operate with two antennas distant from each other and that is simple and economical to achieve.

A cet effet, l'invention a pour objet un système de communication embarqué à bord d'un véhicule ferroviaire pour la transmission d'informations avec des balises disposées au sol, caractérisé en ce qu'il comporte deux chaînes de transmission constituées chacune par une antenne associée à un boîtier amplificateur/adaptateur, les chaînes de transmission étant reliées à un même module d'évaluation assurant le traitement des signaux captés ou émis par l'une des antennes au passage des balises, chaque boîtier amplificateur/adaptateur étant alimenté électriquement par une même unité d'alimentation et comportant des fils de liaison destinés à être connectés à une carte interface du module d'évaluation et en ce que le système comporte des moyens de commutation permettant de relier alternativement la carte interface du module d'évaluation aux fils de liaison de l'une ou l'autre des chaînes de transmission, l'antenne appartenant à la chaîne de transmission dont les fils de liaison ne sont pas raccordés à la carte interface par les moyens de commutation étant mise dans un état inactif de manière à avoir une consommation limitée d'énergie.To this end, the subject of the invention is a communication system on board a railway vehicle for transmitting information with beacons arranged on the ground, characterized in that it comprises two transmission chains each consisting of antenna associated with an amplifier / adapter box, the transmission chains being connected to the same evaluation module ensuring the processing of the signals picked up or transmitted by one of the antennas when passing the beacons, each amplifier / adapter box being powered electrically by a same power unit and comprising connecting son intended to be connected to an interface board of the evaluation module and in that the system comprises switching means for alternately connecting the interface board of the evaluation module to the wires. link of one or the other of the transmission chains, the antenna belonging to the transmission chain don t the connecting wires are not connected to the interface board by the switching means being placed in an inactive state so as to have a limited power consumption.

Selon des modes particuliers de réalisation, le système de communication embarqué à bord d'un véhicule ferroviaire selon l'invention peut comprendre l'une ou plusieurs des caractéristiques suivantes prises isolément ou selon toutes les combinaisons techniquement possibles :

  • les fils de liaison du boîtier amplificateur/adaptateur qui n'est pas raccordé à la carte interface du module d'évaluation sont raccordés, par l'intermédiaire des moyens de commutation, à une carte bouchon de structure équivalente à la carte interface du module d'évaluation ;
  • les deux boîtiers amplificateur/adaptateur comportent des lignes d'alimentation qui sont raccordées en parallèle à une carte d'alimentation du module d'évaluation, la carte d'alimentation étant alimentée par l'unité d'alimentation ;
  • la carte d'alimentation est dimensionnée pour fournir de l'énergie aux deux boîtiers amplificateur/adaptateur lorsqu'une antenne est active et l'autre antenne est inactive ;
  • les moyens de commutations sont des relais ;
  • les moyens de commutation relient l'une ou l'autre des chaînes de transmission à la carte interface du module d'évaluation en fonction du sens de déplacement du véhicule.
According to particular embodiments, the communication system on board a rail vehicle according to the invention may include one or more of the following characteristics taken separately or in any technically possible combination:
  • the connection wires of the amplifier / adapter box which is not connected to the evaluation module interface board are connected, via the switching means, to a plug board of equivalent structure to the interface board of the module; 'Evaluation ;
  • both amplifier / adapter boxes have power supply lines that are connected in parallel to a power supply board of the evaluation module, the power supply card being powered by the power supply unit;
  • the power supply board is sized to supply power to both amplifier / adapter boxes when one antenna is active and the other antenna is inactive;
  • the switching means are relays;
  • the switching means connect one or the other of the transmission chains to the interface board of the evaluation module according to the direction of movement of the vehicle.

L'invention concerne également un véhicule ferroviaire caractérisé en ce qu'il comporte un système de communication tel que précédemment décrit.The invention also relates to a railway vehicle characterized in that it comprises a communication system as previously described.

On comprendra mieux les buts, aspects et avantages de la présente invention, d'après la description donnée ci-après d'un mode particulier de réalisation de l'invention, présenté à titre d'exemple non limitatif, en se référant aux dessins annexés, dans lesquels :

  • la figure 1 est une vue schématique du système de communication de l'art antérieur précédemment décrit ;
  • la figure 2 est une vue schématique illustrant l'implantation d'un système de communication suivant un mode particulier de réalisation de l'invention embarqué sur un tramway muni de deux voitures ;
  • la figure 3 est un schéma de principe illustrant plus en détails les différents composants du système de communication de la figure 2.
The aims, aspects and advantages of the present invention will be better understood from the following description of a particular embodiment of the invention, presented by way of nonlimiting example, with reference to the appended drawings. , wherein :
  • the figure 1 is a schematic view of the communication system of the prior art described above;
  • the figure 2 is a schematic view illustrating the implementation of a communication system according to a particular embodiment of the invention embedded on a tram with two cars;
  • the figure 3 is a block diagram illustrating in more detail the different components of the communication system of the figure 2 .

Pour faciliter la lecture du dessin, seuls les éléments nécessaires à la compréhension de l'invention ont été représentés. Les mêmes éléments portent les mêmes références d'une figure à l'autre.To facilitate the reading of the drawing, only the elements necessary for the understanding of the invention have been represented. The same elements bear the same references from one figure to another.

La figure 2 représente tramway constitué de deux voitures 10, ces voitures 10 comportant un essieu central 12 commun et un essieu avant 11 disposé à proximité de l'extrémité de la voiture 10. Le tramway est équipé d'un système de contrôle de vitesse par balises qui utilise un système de communication permettant l'échange d'informations avec des balises 1 disposées au sol. Ce système de communication comporte deux chaînes de transmission sol/tramway 2, réparties sur les deux voitures 10, qui sont destinées à être utilisées alternativement en fonction du sens de déplacement du tramway. Comme on le verra plus en détails dans la suite de la description, les deux chaînes de transmission 2 sont reliées à un unique module d'évaluation 3 porté par une des voitures 10, ce module 3 assurant le traitement des données reçues ou émises au travers des deux chaînes de transmission 2 au passage des balises 1.The figure 2 trolley consists of two cars 10, these cars 10 having a common central axle 12 and a front axle 11 arranged near the end of the car 10. The tramway is equipped with a beacon speed control system that uses a communication system for exchanging information with tags 1 disposed on the ground. This communication system comprises two ground / tram transmission lines 2, distributed on the two cars 10, which are intended to be used alternately depending on the direction of travel of the tram. As will be seen in more detail in the following description, the two transmission chains 2 are connected to a single evaluation module 3 carried by one of the cars 10, this module 3 processing data received or transmitted through of the two chains of transmission 2 with the passage of the beacons 1.

Le module d'évaluation 3 comporte en outre, dans le cas du contrôle de vitesse par balises, un calculateur qui vérifie que la vitesse du véhicule est en accord avec les indications de signaux communiquées par les balises 1 et transmet des informations de conduite aux panneaux de visualisation 8 placés à chaque extrémité du tramway dans une cabine de conduite.The evaluation module 3 further comprises, in the case of the speed control by beacons, a computer which verifies that the speed of the vehicle is in accordance with the signal indications communicated by the beacons 1 and transmits driving information to the panels. 8 at each end of the tram in a driver's cab.

Conformément à la figure 2, chaque chaîne de transmission 2 du système de communication est portée par l'une des voitures 10 et est constituee d'un boitier adaptateur/amplificateur 22 associé à une antenne 21 qui est disposée sous la voiture à une distance d inférieure à 12 m de l'axe de l'essieu avant 11. Ces antennes 21 associées à leur boîtier adaptateur/amplificateur 22 sont par exemple conformes à celles utilisées habituellement dans le système KVB de contrôle de la vitesse de la SNCF, le boîtier adaptateur/amplificateur 22 étant relié à l'antenne par des câbles de liaison 23 d'une longueur d'environ 6 m, l'antenne 21 émettant sur une longueur d'onde de 27 Mhz et recevant des signaux sur une longueur d'onde de 4,35 Mhz.In accordance with the figure 2 each transmission chain 2 of the communication system is carried by one of the cars 10 and is constituted by an adapter / amplifier box 22 associated with an antenna 21 which is arranged under the car at a distance of less than 12 m from the axis of the front axle 11. These antennas 21 associated with their adapter / amplifier box 22 are for example in accordance with those used usually in the KVB system for controlling the speed of the SNCF, the adapter / amplifier box 22 being connected. on the antenna by cables of link 23 with a length of about 6 m, the antenna 21 emitting at a wavelength of 27 MHz and receiving signals at a wavelength of 4.35 MHz.

Conformément à la figure 3 qui représente plus en détails les éléments du système de communication embarqué de la figure 2, chaque boîtier adapteur/amplificateur 22 est alimenté en électricité par deux lignes d'alimentation 0 et 12 V en continu pour l'émission et deux lignes d'alimentation 0 et 12V en continu pour la réception, ces lignes étant représentées par une unique ligne d'alimentation 5 sur les figures 2 et 3 pour simplifier les figures. Les lignes d'alimentation 5 sont reliées à une carte d'alimentation 31 du module d'évaluation 3 qui est elle-même alimentée par une unité d'alimentation 9 du tramway. Les lignes d'alimentation 5 des deux boîtiers 22 sont reliées directement à la carte d'alimentation 31 du module d'évaluation 3, les lignes d'alimentation 5 de tension équivalente des deux boîtiers 22 étant connectés en parallèle, aucun relais n'étant présent sur les lignes d'alimentation 5 entre l'unité d'alimentation 9 et le boîtier adapteur/amplificateur 22.In accordance with the figure 3 which represents in more detail the elements of the onboard communication system of the figure 2 each adapter / amplifier box 22 is supplied with electricity by two continuous supply lines 0 and 12 V for transmission and two supply lines 0 and 12 V continuously for reception, these lines being represented by a single line 5 on the figures 2 and 3 to simplify the figures. The supply lines 5 are connected to a power supply card 31 of the evaluation module 3 which is itself powered by a supply unit 9 of the tram. The supply lines 5 of the two housings 22 are connected directly to the power supply board 31 of the evaluation module 3, the supply lines 5 of equivalent voltage of the two housings 22 being connected in parallel, no relay being present on the supply lines 5 between the power supply unit 9 and the adapter / amplifier box 22.

Chaque boîtier adapteur/amplificateur 22 comporte également cinq liaisons transmettant les signaux captés ou émis par l'antenne, ces liaisons étant représentées par un unique fil 6 sur les figures 2 et 3. Les fils de liaison 6 sont connectés à un module de commutation 4 comportant un relais 41 pour chacun des fils de liaison 6 en provenance des boîtiers 22 des deux chaînes de transmission 2. Ces relais 41, dont les caractéristiques mécaniques garanties permettent un contrôle sécuritaire de leur état, relient les fils de liaison 6 provenant des boîtiers 22 des deux chaînes de transmission 2 soit à une carte interface 32 appartenant au module d'évaluation 3, soit à une carte bouchon 42 appartenant au module de commutation 4. Les différents relais 41 du module de commutation 4 présentent des commandes de commutations dépendantes de sorte que lorsque les fils de liaison 6 d'un des boîtiers 22 sont connectés avec la carte interface 32 du module d'évaluation 3, les fils de liaison 6 de l'autre boîtier 22 sont connectés à la carte bouchon 42.Each adapter / amplifier box 22 also comprises five links transmitting the signals picked up or transmitted by the antenna, these links being represented by a single wire 6 on the figures 2 and 3 . The connection wires 6 are connected to a switching module 4 comprising a relay 41 for each of the connecting wires 6 coming from the housings 22 of the two transmission chains 2. These relays 41, whose guaranteed mechanical characteristics allow a safe control of their state, connect the connecting wires 6 from the housings 22 of the two transmission chains 2 to either an interface card 32 belonging to the evaluation module 3, or to a plug card 42 belonging to the switching module 4. The various relays 41 of the switching module 4 have dependent switching commands so that when the connecting wires 6 of one of the housings 22 are connected with the interface board 32 of the evaluation module 3, the connecting wires 6 of the other housing 22 are connected to the plug board 42.

La carte interface 32 du module d'évaluation 3 est reliée à un calculateur qui assure le traitement des données et l'élaboration des signaux d'informations de conduite sur les panneaux de visualisation 8.The interface board 32 of the evaluation module 3 is connected to a computer which processes the data and prepares the driving information signals on the display panels 8.

La carte bouchon 42 présente une structure équivalente à la carte interface 32 du module d'évaluation 3 et permet de charger avec une impédance adaptée les fils de liaison 6 qui lui sont raccordés afin que ces derniers ne se comportent pas comme des antennes venant perturber les signaux transmis par la chaîne de transmission 2 qui est raccordée au module d'évaluation 3.The plug card 42 has a structure equivalent to the interface board 32 of the evaluation module 3 and makes it possible to charge with a suitable impedance the connecting son 6 connected to it so that the latter do not behave like antennas disturbing the signals transmitted by the transmission chain 2 which is connected to the evaluation module 3.

La carte bouchon 42 comporte de plus des moyens assurant la mise en position inactive de l'antenne 21 associée au boîtier 22 qui lui est raccordée afin que cette antenne 21 ait une consommation limitée d'énergie en étant éteinte à l'émission et à la réception. Dans le cas des antennes 21 habituellement utilisé sur les systèmes KVB de la SNCF, cette mise en position inactive de l'antenne est réalisée par un simple croisement de deux des fils de liaison 6 au niveau de l'entrée de la carte bouchon 42 par rapport aux branchements équivalents des fils de liaison 6 sur la carte interface 32.The plug card 42 further comprises means ensuring the inactive position of the antenna 21 associated with the housing 22 which is connected to it so that the antenna 21 has a limited power consumption while being switched off on transmission and on reception. In the case of the antennas 21 usually used on the SNCF KVB systems, this inactive setting of the antenna is carried out by simply crossing two of the connection wires 6 at the input of the plug card 42 by relative to the equivalent connections of the connecting wires 6 on the interface board 32.

Le système de communication ainsi réalisé sera avantageusement équipé d'une carte d'alimentation 31 standard habituellement prévue pour alimenter une seule antenne 21. En effet, bien que la carte d'alimentation 31 alimente simultanément les deux boîtiers 22, ces derniers sont respectivement raccordés à une antenne 21 active et une antenne 21 inactive. Or, le boîtier 22 associée à l'antenne 21 inactive consomme très peu d'énergie et la puissance consommée par ce boîtier 22 est négligeable devant la puissance demandée par le boîtier 22 raccordé à l'antenne 21 active, ce qui permet d'utiliser une carte d'alimentation 31 habituelle, c'est à dire de puissance légèrement supérieure à la puissance consommée par un seul boîtier 22 associé à une antenne active 21.The communication system thus produced will advantageously be equipped with a standard power supply card 31 usually designed to feed a single antenna 21. In fact, although the power supply card 31 simultaneously powers the two housings 22, the latter are respectively connected an active antenna 21 and an antenna 21 inactive. However, the housing 22 associated with the inactive antenna 21 consumes very little energy and the power consumed by this housing 22 is negligible compared to the power demanded by the housing 22 connected to the antenna 21 active, which allows to use a usual power supply card 31, that is to say power slightly greater than the power consumed by a single housing 22 associated with an active antenna 21.

Un tel système de communication est particulièrement avantageux car il permet, au moyen des relais, de sélectionner l'une ou l'autre des deux chaînes de transmission à relier au module d'évaluation en fonction du sens de circulation du tramway tout en ayant des chutes de tension dans les lignes d'alimentation minimisées au maximum étant donné qu'aucun élément de commutation n'est placé sur les lignes d'alimentation. Or, dans la pratique la distance inter-antennes est limitée par les pertes de tensions dans les lignes d'alimentation, une distance trop importante entre l'unité d'alimentation et le boîtier adapteur/amplificateur conduisant à avoir une puissance insuffisante au niveau de ces derniers. Ainsi, un tel système permet d'offrir la distance inter-antennes la plus proche de la valeur maximale théorique pour une puissance donnée de l'unité d'alimentation.Such a communication system is particularly advantageous because it makes it possible, by means of the relays, to select one or the other of the two transmission chains to be connected to the evaluation module according to the direction of circulation of the tramway while having voltage drops in the supply lines minimized to the maximum since no switching element is placed on the supply lines. However, in practice the inter-antenna distance is limited by the voltage losses in the supply lines, too great a distance between the power unit and the adapter / amplifier box leading to a insufficient power at the level of these. Thus, such a system makes it possible to offer the inter-antenna distance closest to the theoretical maximum value for a given power of the power unit.

A titre d'exemple, pour une unité d'alimentation standard utilisée sur les systèmes KVB pour alimenter une seule chaîne de transmission, il est nécessaire que les pertes de charges dans les lignes d'alimentation soient inférieures à 90 mΩ, ce qui conduit à avoir des lignes d'alimentation d'une longueur maximum de l'ordre de 20 m. Ainsi, en disposant la carte d'alimentation à mi-parcours entre les deux chaînes de transmission, un tel système de fonctionnement peut fonctionner avec une distance inter-antenne E de l'ordre de 52 m, soit une distance maximale entre essieux extrêmes de l'ordre de 74 m. Un tel système de communication peut donc équiper à moindre frais des tramways comportant jusqu'à trois voitures.As an example, for a standard power unit used on KVB systems to power a single transmission chain, it is necessary that the pressure losses in the supply lines be less than 90 mΩ, which leads to have power lines with a maximum length of about 20 m. Thus, by arranging the power supply card halfway between the two transmission chains, such an operating system can operate with an inter-antenna distance E of the order of 52 m, ie a maximum distance between extreme axles of the order of 74 m. Such a communication system can therefore equip at low cost trams with up to three cars.

Bien entendu, l'invention n'est nullement limitée au mode de réalisation décrit et illustré qui n'a été donné qu'à titre d'exemple. Des modifications restent possibles, notamment du point de vue de la constitution des divers éléments ou par substitution d'équivalents techniques, sans sortir pour autant du domaine de protection de l'invention.Of course, the invention is not limited to the embodiment described and illustrated which has been given by way of example. Modifications are possible, particularly from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Claims (7)

  1. Communication system on board a rail vehicle for transmitting information using beacons (1) arranged on the ground, characterised in that it comprises two transmission chains (2) each constituted by an antenna (21) associated with an amplifier/adapter box (22), the said transmission chains (2) being connected to the same evaluation module (3) ensuring the processing of captured or transmitted signals by one of the antennas (21) on passing the beacons (1), each amplifier/adapter box (22) being electrically supplied by the same supply unit (9) and comprising connecting wires (6) intended to be connected to an interface board (32) of the said evaluation module (3), and in that the system comprises switching means (41) enabling alternate connection of the interface board (32) of the evaluation module (3) to the connecting wires (6) of one or other of the transmission chains (2), the antenna (21) belonging to the transmission chain (2) whose connecting wires (6) are not connected to the interface board (32) by the switching means (41) being put into an inactive state.
  2. Communication system according to Claim 1, characterised in that the connecting wires (6) of the box (22) not connected to the interface board (32) of the evaluation module (3) are connected, via the switching means (41), to a termination board (42) having a structure equivalent to the said interface board (32) of the evaluation module (3).
  3. Communication system according to either one of Claims 1 and 2, characterised in that the two amplifier/adapter boxes (22) comprise supply lines (5) which are connected in parallel to a supply board (31) of the evaluation module (3), the said supply board (31) being supplied by the said supply unit (9).
  4. Communication system according to any one of Claims 1 to 3, characterised in that the said supply board (31) is dimensioned to supply energy to the two amplifier/adapter boxes (22) when one antenna (21) is active and the other antenna is inactive.
  5. Communication system according to any one of Claims 1 to 4, characterised in that the said switching means (41) are relays.
  6. Communication system according to either one of Claims 1 to 5, characterised in that the said switching means (41) connect one or other of the transmission chains (2) to the interface board (32) of the evaluation module depending on the direction of movement of the vehicle.
  7. Rail vehicle, characterised in that it comprises a communication system according to any one of Claims 1 to 6.
EP03300060A 2002-08-23 2003-07-11 Communication system on-board a railway vehicle Expired - Lifetime EP1407955B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0210513 2002-08-23
FR0210513A FR2843726B1 (en) 2002-08-23 2002-08-23 ON-BOARD COMMUNICATION SYSTEM ON RAIL VEHICLE

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EP1407955A1 EP1407955A1 (en) 2004-04-14
EP1407955B1 true EP1407955B1 (en) 2009-10-07

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EP03300060A Expired - Lifetime EP1407955B1 (en) 2002-08-23 2003-07-11 Communication system on-board a railway vehicle

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EP (1) EP1407955B1 (en)
AT (1) ATE444882T1 (en)
DE (1) DE60329566D1 (en)
FR (1) FR2843726B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2951425A1 (en) * 2009-10-16 2011-04-22 El Hadj Mohamed Ait Signaling device for indicating arrival of tramcar, has signaling system positioned on support, where receivers and system do not require maintenance by supplying power using solar cell in order to automate receivers and system
FR2988064B1 (en) * 2012-03-15 2014-04-18 Alstom Transport Sa ONBOARD SYSTEM FOR GENERATING A LOCALIZATION SIGNAL OF A RAILWAY VEHICLE

Family Cites Families (3)

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Publication number Priority date Publication date Assignee Title
JPS54140306A (en) * 1978-04-24 1979-10-31 Hitachi Ltd Double system automatic operation method
US4327415A (en) * 1980-01-31 1982-04-27 Westinghouse Electric Corp. Transit vehicle handback control apparatus and method
JPH0722986A (en) * 1993-07-06 1995-01-24 Kawasaki Steel Corp Guided radio communication backup system for mobile truck

Also Published As

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DE60329566D1 (en) 2009-11-19
FR2843726A1 (en) 2004-02-27
FR2843726B1 (en) 2004-10-01
EP1407955A1 (en) 2004-04-14
ATE444882T1 (en) 2009-10-15

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