EP1407955A1 - Communication system on-board a railway vehicle - Google Patents

Communication system on-board a railway vehicle Download PDF

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Publication number
EP1407955A1
EP1407955A1 EP03300060A EP03300060A EP1407955A1 EP 1407955 A1 EP1407955 A1 EP 1407955A1 EP 03300060 A EP03300060 A EP 03300060A EP 03300060 A EP03300060 A EP 03300060A EP 1407955 A1 EP1407955 A1 EP 1407955A1
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EP
European Patent Office
Prior art keywords
communication system
antenna
power supply
board
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.)
Granted
Application number
EP03300060A
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German (de)
French (fr)
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EP1407955B1 (en
Inventor
M. Bernard Auge De Fleury
M. Didier Riffaud
Xavier Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom Transport SA
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Alstom SA
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Publication date
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Publication of EP1407955A1 publication Critical patent/EP1407955A1/en
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Publication of EP1407955B1 publication Critical patent/EP1407955B1/en
Anticipated expiration legal-status Critical
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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 an on-board communication system aboard a railway vehicle for transmitting information with tags placed on the ground and relates in particular to a communication system for tram.
  • the chain of transmission usually consists of an on-board antenna associated with a amplifier / adapter housing having as output links for the transmission of signals to or from the antenna, these links being connected to an interface card of an evaluation module carrying out the processing of data.
  • Such an amplifier / adapter housing is supplied with electricity by power lines connected to a vehicle power supply unit.
  • Such communication systems are used in particular in tag speed control, such as the KVB system used in France by the National railway Company (SNCF), each vehicle being informed at passage of a beacon on the state of the signaling, a calculator of the module constantly checking that the speed of the vehicle is compatible with the signaling encountered and imposing if necessary an emergency stop.
  • SNCF National Railway Company
  • the SNCF requires that the distance between the vertical axis of the antenna and the axis of the axle before it is not more than 12 m.
  • Such a value may however vary in function of the operating companies since it is a function, in particular, of the location of the ground beacons in relation to the infrastructure.
  • the distance between the extreme axles of the same vehicle may not exceed 24 m when the vehicle has only one antenna.
  • each car is then equipped with an antenna 21 disposed at a distance d ⁇ 12 m from the front axle 11.
  • the antenna 21 is associated with a housing amplifier / adapter 22 from which come out of the connecting wires 6 which are connected to an interface card of an evaluation module 3 embarked on the car 10.
  • Each housing amplifier / adapter 22 is powered electrically by lines 5 connected to a power supply card present in the module evaluation, this card itself being powered by a power supply unit 9 disconnectable by means of a switch 7.
  • the evaluation module 3 of each car is connected to a viewing panel 8 on which are displayed the different information communicated in the passage of beacons 1 and in particular the possible 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 an onboard communication system on board of a railway vehicle for transmitting information with tags disposed on the ground, characterized in that it comprises two transmission chains each constituted by an antenna associated with an amplifier / adapter housing, the transmission lines being connected to the same evaluation module ensuring the processing of the signals picked up or transmitted by one of the antennas at the passage of the beacons, each amplifier / adapter housing being powered electrically by the same power unit and having connection wires for connection to a evaluation module interface board and in that the system comprises means switching device for alternately connecting the interface card of the unit evaluation of the connecting wires of one or the other of the transmission chains, the antenna belonging to the transmission chain whose connecting wires are not connected to the interface card by the switching means being put into a state inactive so as to have limited energy consumption.
  • the invention also relates to a railway vehicle characterized in that comprises a communication system as previously described.
  • Figure 2 represents tramway consisting of two cars 10, these cars 10 having a common central axle 12 and a front axle 11 arranged nearby the end of the car 10.
  • the tram is equipped with a control system of tagged speed that uses a communication system allowing the exchange information with tags 1 disposed on the ground.
  • This communication system has two ground / tramway transmission lines 2, spread over both cars 10, which are intended to be used alternately depending on the direction of moving the tramway.
  • the two transmission chains 2 are connected to a single module 3 carried by one of the cars 10, this module 3 ensuring the processing of data received or transmitted through both transmission lines 2 in the passage tags 1.
  • the evaluation module 3 further comprises, in the case of speed control by tags, a calculator that verifies that the speed of the vehicle is in accordance with the indications of signals communicated by beacons 1 and transmits information driving at visualization panels 8 placed at each end of the tramway in a driving cabin.
  • each transmission chain 2 of the transmission system communication is carried by one of the cars 10 and is made of a box adapter / amplifier 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 housing / amplifier 22 are for example in accordance with those usually used in the KVB system of speed control of the SNCF, the adapter / amplifier housing 22 being connected to the antenna by cables of link 23 with a length of about 6 m, the antenna 21 emitting on a length of 27 Mhz and receiving signals on a wavelength of 4.35 Mhz.
  • each adapter / amplifier box 22 is powered by two power lines 0 and 12 V continuously for the emission and two supply lines 0 and 12V continuously for the reception, these lines being represented by a single feed line 5 in FIGS. to simplify the figures.
  • the supply lines 5 are connected to a card supply 31 of the evaluation module 3 which is itself powered by a unit power supply 9 of the tramway.
  • the supply lines 5 of the two housings 22 are connected directly to the power supply board 31 of the evaluation module 3, the lines power supply 5 equivalent voltage of the two housings 22 being connected in parallel, no relay being present on the supply lines 5 between the unit 9 power supply and the housing adapter / amplifier 22.
  • Each adapter / amplifier housing 22 also comprises five links transmitting the signals picked up or transmitted by the antenna, these links being represented by a single wire 6 in Figures 2 and 3.
  • the connecting son 6 are connected to a switching module 4 comprising a relay 41 for each of the connection wires 6 from the housings 22 of the two transmission chains 2.
  • These relays 41 including the guaranteed mechanical characteristics allow a safe control of their state, connect the connecting wires 6 from the housings 22 of the two chains of transmission 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 different relay 41 of switching module 4 have switching commands dependent 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 connection 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 provides the data processing and development of driving information signals on viewing panels 8.
  • the plug card 42 has a structure equivalent to the interface card 32 of the evaluation module 3 and makes it possible to charge with a suitable impedance the son of link 6 that are 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 for positioning inactive of the antenna 21 associated with the housing 22 which is connected to it so that this antenna 21 has a limited power consumption while being off on transmission and the reception.
  • this setting inactive position of the antenna is carried out by a simple crossing of two connecting wires 6 at the entrance of the card plug 42 relative to the equivalent connections of the connecting son 6 on the interface card 32.
  • the communication system thus produced will advantageously be equipped with a card 31 standard power supply usually intended to power a single antenna 21.
  • the power supply card 31 simultaneously feeds both housings 22, the latter are respectively connected to an active antenna 21 and a 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 in front of the power demanded by the housing 22 connected to the antenna 21 active, which allows to use a power supply card 31 usual, ie slightly power greater than the power consumed by a single housing 22 associated with an antenna active 21.
  • Such a communication system is particularly advantageous because it allows, at relays, to select one or the other of the two transmission lines connect to the evaluation module according to the direction of traffic of the tramway while having voltage drops in the power lines minimized to the maximum since no switching element is placed on the lines Power.
  • the inter-antenna distance is limited by voltage losses in the supply lines, too much distance between the power supply unit and the adapter / amplifier box leading to a insufficient power at the level of these. So, such a system allows 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 an on-board communication system aboard a railway vehicle for transmitting information with tags placed on the ground and relates in particular to a communication system for tram.

Il est connu d'utiliser à bord des véhicules ferroviaires des systèmes de communication comportant une chaíne de transmission sol/véhicule permettant l'échange de données avec des balises au sol. Dans un tel système, la chaíne de transmission est habituellement constituée d'une antenne embarquée associée à un boítier 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 boítier 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 comprising a ground / vehicle transmission chain allowing data exchange with ground tags. In such a system, the chain of transmission usually consists of an on-board antenna associated with a amplifier / adapter housing having as output links for the transmission of signals to or from the antenna, these links being connected to an interface card of an evaluation module carrying out the processing of data. Such an amplifier / adapter housing is supplied with electricity by power lines connected to a vehicle power supply unit.

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 tag speed control, such as the KVB system used in France by the National Railway Company (SNCF), each vehicle being informed at passage of a beacon on the state of the signaling, a calculator of the module constantly checking that the speed of the vehicle is compatible with the signaling encountered and imposing if necessary an emergency stop. However, in the framework of such safe use, it is necessary to respect the rules as to 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 axle before it is not more than 12 m. Such a value may however vary in function of the operating companies since it is a function, in particular, of the location of the ground beacons in relation to the infrastructure.

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 may 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 boítier 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 boítier 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 onboard communication system as well as this is represented in Figure 1. In accordance with this figure which represents a tramway with two cars 10, each car is then equipped with an antenna 21 disposed at a distance d ≤ 12 m from the front axle 11. The antenna 21 is associated with a housing amplifier / adapter 22 from which come out of the connecting wires 6 which are connected to an interface card of an evaluation module 3 embarked on the car 10. Each housing amplifier / adapter 22 is powered electrically by lines 5 connected to a power supply card present in the module evaluation, this card itself being powered by a power supply unit 9 disconnectable by means of a switch 7. The evaluation module 3 of each car is connected to a viewing panel 8 on which are displayed the different information communicated in the passage of beacons 1 and in particular the possible 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 system of embedded communication 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 chaínes de transmission constituées chacune par une antenne associée à un boítier amplificateur/adaptateur, les chaínes 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 boítier 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 de l'unité d'évaluation aux fils de liaison de l'une ou l'autre des chaínes de transmission, l'antenne appartenant à la chaíne 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.For this purpose, the subject of the invention is an onboard communication system on board of a railway vehicle for transmitting information with tags disposed on the ground, characterized in that it comprises two transmission chains each constituted by an antenna associated with an amplifier / adapter housing, the transmission lines being connected to the same evaluation module ensuring the processing of the signals picked up or transmitted by one of the antennas at the passage of the beacons, each amplifier / adapter housing being powered electrically by the same power unit and having connection wires for connection to a evaluation module interface board and in that the system comprises means switching device for alternately connecting the interface card of the unit evaluation of the connecting wires of one or the other of the transmission chains, the antenna belonging to the transmission chain whose connecting wires are not connected to the interface card by the switching means being put into a state inactive so as to have limited energy 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 boítier amplificateur/adaptateur qui n'est pas raccordé à la carte interface de l'unité d'évaluation sont raccordés, par l'intermédiaire des moyens de commutation, à une carte bouchon de structure équivalente à la carte interface de l'unité d'évaluation ;
  • les deux boítiers 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 boítiers 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 chaínes 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 unit which is not connected to the evaluation unit interface board are connected, via the switching means, to a plug board of equivalent structure to the interface board of the evaluation unit; the evaluation unit;
  • the two amplifier / adapter boxes have power supply lines which 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 the two 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 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 description given below of a particular embodiment of the invention, given by way of non-limiting example, with reference to the appended drawings. , wherein :
  • Figure 1 is a schematic view of the communication system of the prior art described above;
  • 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;
  • FIG. 3 is a block diagram illustrating in more detail the various components of the communication system of FIG. 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 understanding of the invention have been shown. The same elements have 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 chaínes 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 chaínes 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 chaínes de transmission 2 au passage des balises 1.Figure 2 represents tramway consisting of two cars 10, these cars 10 having a common central axle 12 and a front axle 11 arranged nearby the end of the car 10. The tram is equipped with a control system of tagged speed that uses a communication system allowing the exchange information with tags 1 disposed on the ground. This communication system has two ground / tramway transmission lines 2, spread over both cars 10, which are intended to be used alternately depending on the direction of moving the tramway. As will be seen in more detail later in the description, the two transmission chains 2 are connected to a single module 3 carried by one of the cars 10, this module 3 ensuring the processing of data received or transmitted through both transmission lines 2 in the passage tags 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 speed control by tags, a calculator that verifies that the speed of the vehicle is in accordance with the indications of signals communicated by beacons 1 and transmits information driving at visualization panels 8 placed at each end of the tramway in a driving cabin.

Conformément à la figure 2, chaque chaíne 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 boítier adaptateur/amplificateur 22 sont par exemple conformes à celles utilisées habituellement dans le système KVB de contrôle de la vitesse de la SNCF, le boítier 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.According to FIG. 2, each transmission chain 2 of the transmission system communication is carried by one of the cars 10 and is made of a box adapter / amplifier 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 housing / amplifier 22 are for example in accordance with those usually used in the KVB system of speed control of the SNCF, the adapter / amplifier housing 22 being connected to the antenna by cables of link 23 with a length of about 6 m, the antenna 21 emitting on a length of 27 Mhz and receiving signals on 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 boítier 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 boítiers 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 boítiers 22 étant connectés en parallèle, aucun relais n'étant présent sur les lignes d'alimentation 5 entre l'unité d'alimentation 9 et le boítier adapteur/amplificateur 22.In accordance with Figure 3 which represents in more detail the elements of the onboard communication of FIG. 2, each adapter / amplifier box 22 is powered by two power lines 0 and 12 V continuously for the emission and two supply lines 0 and 12V continuously for the reception, these lines being represented by a single feed line 5 in FIGS. to simplify the figures. The supply lines 5 are connected to a card supply 31 of the evaluation module 3 which is itself powered by a unit power supply 9 of the tramway. The supply lines 5 of the two housings 22 are connected directly to the power supply board 31 of the evaluation module 3, the lines power supply 5 equivalent voltage of the two housings 22 being connected in parallel, no relay being present on the supply lines 5 between the unit 9 power supply and the housing adapter / amplifier 22.

Chaque boítier 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 boítiers 22 des deux chaínes 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 boítiers 22 des deux chaínes 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 boítiers 22 sont connectés avec la carte interface 32 du module d'évaluation 3, les fils de liaison 6 de l'autre boítier 22 sont connectés à la carte bouchon 42.Each adapter / amplifier housing 22 also comprises five links transmitting the signals picked up or transmitted by the antenna, these links being represented by a single wire 6 in Figures 2 and 3. The connecting son 6 are connected to a switching module 4 comprising a relay 41 for each of the connection wires 6 from the housings 22 of the two transmission chains 2. These relays 41, including the guaranteed mechanical characteristics allow a safe control of their state, connect the connecting wires 6 from the housings 22 of the two chains of transmission 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 different relay 41 of switching module 4 have switching commands dependent 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 connection 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 provides the data processing and development of driving information signals on viewing 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 chaíne de transmission 2 qui est raccordée au module d'évaluation 3.The plug card 42 has a structure equivalent to the interface card 32 of the evaluation module 3 and makes it possible to charge with a suitable impedance the son of link 6 that are 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 boítier 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 for positioning inactive of the antenna 21 associated with the housing 22 which is connected to it so that this antenna 21 has a limited power consumption while being off on transmission and the reception. In the case of antennas 21 usually used on the systems KVB SNCF, this setting inactive position of the antenna is carried out by a simple crossing of two connecting wires 6 at the entrance of the card plug 42 relative to the equivalent connections of the connecting son 6 on the interface card 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 boítiers 22, ces derniers sont respectivement raccordés à une antenne 21 active et une antenne 21 inactive. Or, le boítier 22 associée à l'antenne 21 inactive consomme très peu d'énergie et la puissance consommée par ce boítier 22 est négligeable devant la puissance demandée par le boítier 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 boítier 22 associé à une antenne active 21.The communication system thus produced will advantageously be equipped with a card 31 standard power supply usually intended to power a single antenna 21. Indeed, although the power supply card 31 simultaneously feeds both housings 22, the latter are respectively connected to an active antenna 21 and a antenna 21 inactive. Or, the housing 22 associated with the inactive antenna 21 consumes very little energy and the power consumed by this housing 22 is negligible in front of the power demanded by the housing 22 connected to the antenna 21 active, which allows to use a power supply card 31 usual, ie slightly power greater than the power consumed by a single housing 22 associated with an antenna active 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 chaínes 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 boítier 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 allows, at relays, to select one or the other of the two transmission lines connect to the evaluation module according to the direction of traffic of the tramway while having voltage drops in the power lines minimized to the maximum since no switching element is placed on the lines Power. In practice, however, the inter-antenna distance is limited by voltage losses in the supply lines, too much distance between the power supply unit and the adapter / amplifier box leading to a insufficient power at the level of these. So, such a system allows 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 chaíne 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 chaínes 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 supply unit used on KVB to feed a single transmission chain, it is necessary that the losses loads in the supply lines are less than 90 mΩ, which leads to have power lines with a maximum length of about 20 m. So, by arranging the power card mid-way between the two channels of transmission, such an operating system can operate with a distance inter-antenna E of the order of 52 m, ie a maximum distance between axles extremes of the order of 74 m. Such a communication system can therefore equip lower cost of 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 only as an example. Modifications are possible, particular from the point of view of the constitution of the various elements or by substitution technical equivalents, without departing from the scope of protection of the invention.

Claims (7)

Système de communication embarqué à bord d'un véhicule ferroviaire pour la transmission d'informations avec des balises (1) disposées au sol, caractérisé en ce qu'il comporte deux chaínes de transmission (2) constituées chacune par une antenne (21) associée à un boítier amplificateur/adaptateur (22), lesdites chaínes de transmission (2) étant reliées à un même module d'évaluation (3) assurant le traitement des signaux captés ou émis par l'une des antennes (21) au passage des balises (1), chaque boítier amplificateur/adaptateur (22) étant alimenté électriquement par une même unité d'alimentation (9) et comportant des fils de liaison (6) destinés à être connectés à une carte interface (32) dudit module d'évaluation (3) et en ce que le système comporte des moyens de commutation (41) permettant de relier alternativement la carte interface (32) de l'unité d'évaluation (3) aux fils de liaison (6) de l'un ou J'autre des chaínes de transmission (2), l'antenne (21) appartenant à la chaíne de transmission (2) dont les fils de liaison (6) ne sont pas raccordés à la carte interface (32) par les moyens de commutation (41) étant mise dans un état inactif.Communication system on board a railway vehicle for the transmission of information with tags (1) arranged on the ground, characterized in that it comprises two transmission chains (2) each constituted by an antenna (21) associated an amplifier / adapter housing (22), said transmission chains (2) being connected to a same evaluation module (3) providing the processing of the signals picked up or transmitted by one of the antennas (21) passing tags (1), each amplifier / adapter housing (22) being electrically powered by the same power supply unit (9) and having connecting wires (6) for connection to an interface board (32) of said evaluation module (3) and in that the system comprises switching means (41) for alternately connecting the interface board (32) of the evaluation unit (3) to the connecting wires (6) of one or the other. other transmission lines (2), the antenna ne (21) belonging to the transmission chain (2) whose connecting son (6) are not connected to the interface board (32) by the switching means (41) being put in an inactive state. Système de communication selon les revendications 1, caractérisé en ce que les fils de liaison (6) du boítier (22) non raccordé à la carte interface (32) de l'unité d'évaluation (2) sont raccordés, par l'intermédiaire des moyens de commutation (41), à une carte bouchon (42) de structure équivalente à ladite carte interface (32) de l'unité d'évaluation (3).Communication system according to claims 1, characterized in that the connecting wires (6) of the housing (22) not connected to the interface board (32) of the evaluating unit (2) are connected via the switching means (41) to a plug board (42) of equivalent structure to said interface board (32) of the evaluation unit (3). Système de communication selon l'une quelconque des revendications 1 à 2, caractérisé en ce que les deux boítiers amplificateur/adaptateur (22) comportent des lignes d'alimentation (9) qui sont raccordées en parallèle à une carte d'alimentation (31) du module d'évaluation (3), ladite carte d'alimentation (31) étant alimentée par ladite unité d'alimentation (3).Communication system according to any one of claims 1 to 2, characterized in that the two amplifier / adapter boxes (22) comprise power supply lines (9) which are connected in parallel to a power supply card (31) of the evaluation module (3), said power supply card (31) being powered by said power supply unit (3). Système de communication selon l'une quelconque des revendications 1 à 3, caractérisé en ce que ladite carte d'alimentation (31) est dimensionnée pour fournir de l'énergie aux deux boítiers amplificateur/adaptateur (22) lorsqu'une antenne (21) est active et l'autre antenne est inactive. Communication system according to any one of claims 1 to 3, characterized in that said power supply board (31) is sized to supply power to the two amplifier / adapter boxes (22) when an antenna (21) is active and the other antenna is inactive. Système communication selon l'une quelconque des revendications 1 à 4, caractérisé en ce que lesdits moyens de commutations (41) sont des relais.Communication system according to any one of claims 1 to 4, characterized in that said switching means (41) are relays. Système communication selon l'une quelconque des revendications 1 à 5, caractérisé en ce que lesdits moyens de commutation (41) relient l'une ou l'autre des chaínes de transmission (2) à la carte interface (32) du module d'évaluation en fonction du sens de déplacement du véhicule.Communication system according to any one of claims 1 to 5, characterized in that said switching means (41) connect one or the other of the transmission chains (2) to the interface card (32) of the module of evaluation according to the direction of movement of the vehicle. Véhicule ferroviaire caractérisé en ce qu'il comporte un système de communication selon l'une quelconque des revendications 1 à 6.Railway vehicle characterized 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)

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

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AT (1) ATE444882T1 (en)
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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
WO2013135533A1 (en) * 2012-03-15 2013-09-19 Alstom Transport Sa On-board system for generating a positioning signal for a rail vehicle

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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
WO2013135533A1 (en) * 2012-03-15 2013-09-19 Alstom Transport Sa On-board system for generating a positioning signal for a rail vehicle
FR2988064A1 (en) * 2012-03-15 2013-09-20 Alstom Transport Sa ONBOARD SYSTEM FOR GENERATING A LOCALIZATION SIGNAL OF A RAILWAY VEHICLE
KR20150002607A (en) * 2012-03-15 2015-01-07 알스톰 트랜스포트 테크놀로지스 On-board system for generating a positioning signal for a rail vehicle
US9663126B2 (en) 2012-03-15 2017-05-30 Alstom Transport Technologies Embedded system for generating a rail vehicle location signal
KR102182528B1 (en) 2012-03-15 2020-11-24 알스톰 트랜스포트 테크놀로지스 On-board system for generating a positioning signal for a rail vehicle

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DE60329566D1 (en) 2009-11-19
ATE444882T1 (en) 2009-10-15
FR2843726B1 (en) 2004-10-01
FR2843726A1 (en) 2004-02-27
EP1407955B1 (en) 2009-10-07

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