EP1227024B1 - Device and method for intermittently locating a railway vehicle along a track with beacons and antenna for such a device - Google Patents

Device and method for intermittently locating a railway vehicle along a track with beacons and antenna for such a device Download PDF

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Publication number
EP1227024B1
EP1227024B1 EP01403328A EP01403328A EP1227024B1 EP 1227024 B1 EP1227024 B1 EP 1227024B1 EP 01403328 A EP01403328 A EP 01403328A EP 01403328 A EP01403328 A EP 01403328A EP 1227024 B1 EP1227024 B1 EP 1227024B1
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EP
European Patent Office
Prior art keywords
beacon
antenna
receiver circuit
loop
circuit
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EP01403328A
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German (de)
French (fr)
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EP1227024A1 (en
Inventor
Jacques Rostren
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Alstom Transport SA
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Alstom Transport SA
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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 vehicle train, e.g. to release brake, to operate a warning signal
    • B61L3/02—Devices along the route for controlling devices on the vehicle or vehicle train, e.g. to release brake, 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 vehicle train, e.g. to release brake, 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 vehicle train, e.g. to release brake, 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 vehicle train, e.g. to release brake, 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
    • B61L25/00—Recording or indicating positions or identities of vehicles or vehicle trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or vehicle trains
    • B61L25/026—Relative localisation, e.g. using odometer

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Near-Field Transmission Systems (AREA)
  • Escalators And Moving Walkways (AREA)

Abstract

The localization detector for a train on a railway track uses beacons (2) to transmit an electromagnetic signal to the vehicle antenna (1) and receive. Each beacon has an emission circuit with a loop. the train antenna has a secondary receiver circuit with a figure of eight loop to allow the precise determination of when the antenna is opposite the beacon. The exterior width of the secondary loop matches that of the beacon loop. Claims include a method and antenna for the detector.

Description

L'invention se rapporte à un dispositif et à un procédé pour la localisation d'un véhicule ferroviaire le long d'une voie ferrée équipée d'un système de balises et plus particulièrement à un dispositif permettant la localisation précise et ponctuelle d'un véhicule ferroviaire par rapport à une balise émettant un signal électromagnétique pour la transmission d'informations. L'invention se rapporte également à une antenne destinée à équiper un véhicule ferroviaire dans un tel dispositif.The invention relates to a device and a method for locating a railway vehicle along a railway equipped with a beacon system and more particularly to a device for the precise and punctual localization of a vehicle. rail compared to a beacon transmitting an electromagnetic signal for the transmission of information. The invention also relates to an antenna intended to equip a railway vehicle in such a device.

Il est connu d'équiper les réseaux de transport ferroviaire d'un système de balises permettant la transmission d'informations entre les balises disposées au sol et un équipement embarqué à bord du véhicule. Ainsi, le document FR-A-2 713 754 divulgue un système de balises au sol, alimentées par rayonnement, permettant la communication avec une antenne embarquée à bord d'un véhicule ferroviaire. En plus de la transmission d'informations, il est connu d'utiliser un tel système de balises pour localiser ponctuellement le véhicule ferroviaire sur la voie par la connaissance de l'emplacement de la balise qui est franchie par l'antenne embarquée sur le véhicule ferroviaire. Une telle localisation s'effectue habituellement par l'analyse de la puissance du signal capté par l'antenne, en faisant correspondre l'instant où le signal capté par l'antenne est maximal avec l'instant où l'antenne se trouve au-dessus de la balise.It is known to equip the rail transport networks with a system of beacons allowing the transmission of information between the beacons arranged on the ground and equipment on board the vehicle. Thus, the document FR-A-2,713,754 discloses a radiant-powered system of ground beacons for communication with an on-board antenna on a railway vehicle. In addition to the transmission of information, it is known to use such a system of beacons to locate the railway vehicle on the track punctually by knowing the location of the beacon that is crossed by the antenna on the vehicle. rail. Such a location is usually done by analyzing the power of the signal picked up by the antenna, matching the moment when the signal picked up by the antenna is maximum with the moment when the antenna is located above the beacon.

Toutefois, un tel procédé de localisation ne permet qu'une localisation imprécise du véhicule, le signal capté par l'antenne étant maximal sur une plage relativement grande pour permettre la transmission des informations. Ainsi, pour le système EUROBALISE utilisant des balises d'environ 50 cm de long, on obtient une précision sur la localisation du véhicule de l'ordre de ± 20 cm pour une vitesse du véhicule inférieure à 40 km/h et de l'ordre de ± 1 m pour une vitesse du véhicule supérieure à 300 km/h.However, such a locating method allows only an imprecise location of the vehicle, the signal picked up by the antenna being maximum over a relatively large range to allow the transmission of information. Thus, for the EUROBALISE system using beacons approximately 50 cm long, a precision on the location of the vehicle of the order of ± 20 cm is obtained for a vehicle speed of less than 40 km / h and the order ± 1 m for a vehicle speed greater than 300 km / h.

Une telle précision est insuffisante pour les systèmes de contrôle automatique de véhicule, notamment pour un métro, pour lequel une précision généralement inférieure à ± 5 cm est nécessaire pour assurer, dans les stations, un bon positionnement du métro relativement au quai.Such precision is insufficient for automatic vehicle control systems, especially for a metro, for which a precision generally less than ± 5 cm is necessary to ensure, in the stations, a good positioning of the metro relative to the platform.

Le but de la présente invention est donc de proposer un dispositif et un procédé de localisation d'un véhicule ferroviaire qui permette de localiser ponctuellement et précisément le véhicule ferroviaire par rapport à un système de balises, notamment de type EUROBALISE, et qui soit simple et économique à réaliser.The object of the present invention is therefore to propose a device and a method for locating a railway vehicle which makes it possible to locate the railway vehicle precisely and precisely with respect to a system of beacons, in particular of the EUROBALISE type, and which is simple and economic to achieve.

L'invention a pour objet un dispositif pour la localisation ponctuelle d'un véhicule ferroviaire le long d'une voie ferrée équipée d'un système de balises, les balises étant destinées à transmettre des informations vers le véhicule par l'émission d'un signal électromagnétique, le véhicule comportant une antenne présentant un premier circuit récepteur permettant de capter le signal électromagnétique émis par la balise qui est franchie par l'antenne, caractérisé en ce que l'antenne comporte un second circuit récepteur en forme de boucle en huit permettant de déterminer précisément l'instant où l'antenne est centrée sur la balise.The invention relates to a device for the localization of a railway vehicle along a railway equipped with a beacon system, the beacons being intended to transmit information to the vehicle by the transmission of a electromagnetic signal, the vehicle comprising an antenna having a first receiver circuit for sensing the electromagnetic signal emitted by the beacon which is crossed by the antenna, characterized in that the antenna comprises a second receiver circuit in the form of an eight-loop to precisely determine when the antenna is centered on the beacon.

L'invention a également pour objet un dispositif pour la localisation ponctuelle d'un véhicule satisfaisant à l'une des caractéristiques suivantes :

  • le premier circuit récepteur est en forme de boucle simple ;
  • la balise est alimentée par rayonnement et comporte un circuit d'antenne captant l'énergie rayonnée par un émetteur embarqué par le véhicule ferroviaire et fournissant l'énergie nécessaire à un circuit d'émission de la balise ;
  • la balise comporte un circuit d'émission constitué par une boucle et la taille extérieure de la boucle en huit formant le second circuit récepteur est sensiblement égale à la taille de la boucle du circuit d'émission de la balise ;
  • le second circuit récepteur est centré sur le premier circuit récepteur de manière à ce que le point de croisement de la boucle en huit formant le second circuit récepteur soit sensiblement situé au centre de la boucle formant le premier circuit récepteur ;
  • le système de balises est conforme à la norme EUROBALISE.
The invention also relates to a device for the point localization of a vehicle satisfying one of the following characteristics:
  • the first receiver circuit is in the form of a simple loop;
  • the beacon is powered by radiation and comprises an antenna circuit sensing the energy radiated by a transmitter on board the railway vehicle and supplying the energy required for a transmitting circuit of the beacon;
  • the beacon comprises an emission circuit constituted by a loop and the outer size of the eight-loop forming the second receiver circuit is substantially equal to the size of the loop of the transmitting circuit of the beacon;
  • the second receiver circuit is centered on the first receiver circuit so that the crossing point of the eight loop forming the second receiver circuit is substantially located in the center of the loop forming the first receiver circuit;
  • the beacon system complies with the EUROBALISE standard.

L'invention a également pour objet un procédé pour la localisation ponctuelle d'un véhicule équipé d'un dispositif selon l'une quelconque des caractéristiques précédemment décrites, caractérisé en ce qu'on détecte le changement de phase du signal délivré par le second circuit récepteur par rapport au signal délivré par le premier circuit récepteur pour en déduire l'instant où l'antenne est centrée sur la balise.The subject of the invention is also a method for spot localization of a vehicle equipped with a device according to any one of the characteristics described above, characterized in that the phase change of the signal delivered by the second circuit is detected. receiver relative to the signal delivered by the first receiver circuit to deduce the moment when the antenna is centered on the beacon.

L'invention concerne de plus une antenne permettant de capter des ondes électromagnétiques émises par une balise, l'antenne comportant un premier circuit récepteur en forme de boucle simple permettant la réception des informations communiquées par la balise, caractérisé en ce qu'elle comporte un second circuit récepteur en forme de boucle en huit permettant de déterminer précisément l'instant où l'antenne est centrée sur la balise.The invention further relates to an antenna for sensing electromagnetic waves emitted by a beacon, the antenna comprising a first receiver circuit in the form of a simple loop for receiving the information communicated by the beacon, characterized in that it comprises a second loop-shaped receiver circuit in eight for precisely determining when the antenna is centered on the beacon.

Selon une caractéristique de l'antenne selon l'invention, l'antenne est embarquée sur un véhicule ferroviaire et coopère avec des balises conformes à la norme EUROBALISE.According to one characteristic of the antenna according to the invention, the antenna is embedded on a railway vehicle and cooperates with beacons in accordance with the EUROBALISE standard.

On comprendra mieux les buts, aspects et avantages de la présente invention, d'après la description donnée ci-après d'un mode 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 générale d'un dispositif de localisation ponctuelle d'un véhicule ferroviaire par rapport à une balise selon l'invention ;
  • La figure 2 est une représentation schématique d'un mode particulier de réalisation de l'antenne selon l'invention représentée en regard d'une balise ;
  • La figure 3 est un graphe représentant la puissance du signal capté par un premier circuit récepteur, équipant l'antenne de la figure 2, en fonction de la position de l'antenne par rapport à la balise ;
  • La figure 4 est un graphe représentant la puissance du signal capté par un second circuit récepteur, équipant l'antenne de la figure 2, en fonction de la position de l'antenne par rapport à la balise ;
  • La figure 5 représente la différence de phase entre les signaux captés par les premier et second circuits récepteurs suivant la position de l'antenne par rapport à la balise.
The aims, aspects and advantages of the present invention will be better understood from the following description of an embodiment of the invention, presented by way of non-limiting example, with reference to the appended drawings. wherein :
  • The figure 1 is a general view of a locating device of a railway vehicle relative to a beacon according to the invention;
  • The figure 2 is a schematic representation of a particular embodiment of the antenna according to the invention shown opposite a beacon;
  • The figure 3 is a graph representing the power of the signal picked up by a first receiver circuit, equipping the antenna of the figure 2 , depending on the position of the antenna with respect to the beacon;
  • The figure 4 is a graph representing the power of the signal picked up by a second receiver circuit, equipping the antenna of the figure 2 , depending on the position of the antenna with respect to the beacon;
  • The figure 5 represents the phase difference between the signals picked up by the first and second receiver circuits according to the position of the antenna relative to the beacon.

Pour faciliter la lecture du dessin, seuls les éléments nécessaires à la compréhension de l'invention ont été représentés.To facilitate the reading of the drawing, only the elements necessary for the understanding of the invention have been represented.

La figure 1 représente un dispositif de localisation ponctuelle d'un véhicule ferroviaire sur une voie ferrée comportant des installations au sol qui se composent principalement de balises 2, de type connu en soi, munies de leur électronique de commande et fixées le long de la voie ferrée en des emplacements connus.The figure 1 represents a device for spot localization of a railway vehicle on a railway track comprising ground installations which consist mainly of beacons 2, of a type known per se, provided with their control electronics and fixed along the railway line in known locations.

Le dispositif de localisation comporte également des équipements embarqués à bord du véhicule ferroviaire qui se composent principalement d'une antenne réceptrice et d'une unité d'évaluation 6. L'unité d'évaluation 6, qui peut être un calculateur, est alimentée par son propre convertisseur et est connectée à l'antenne 1. L'antenne 1 est située sous le véhicule à un emplacement tel que l'antenne 1 passe dans l'axe des balises 2 lorsque le train circule sur la voie ferrée.The locating device also comprises equipment on board the rail vehicle which consists mainly of a receiving antenna and an evaluation unit 6. The evaluation unit 6, which may be a calculator, is powered by its own converter and is connected to the antenna 1. The antenna 1 is located under the vehicle at a location such that the antenna 1 passes in the axis of the beacons 2 when the train is traveling on the railway.

Conformément à la figure 2, les balises 2 comportent un circuit d'émission muni d'une boucle émettrice destinée à émettre des ondes électromagnétiques représentatives de l'information à transmettre au véhicule. De manière préférentielle, les balises 2 sont alimentées par rayonnement en provenance d'un émetteur embarqué par l'antenne 1 du véhicule ferroviaire, ce dernier fournissant l'énergie nécessaire au fonctionnement de la balise 2 qui est franchie par le véhicule ferroviaire. Cette alimentation électrique de la balise 2 est réalisée par exemple en intégrant dans la balise un circuit d'antenne muni d'une bobine réceptrice connecté en série au primaire d'un transformateur d'isolement, le secondaire de ce dernier étant connecté au circuit d'émission de la balise. Avantageusement, les balises 2 sont conformes à la norme européenne EUROBALISE, c'est à dire qu'elles assurent la communication par couplage magnétique avec l'antenne 1 du véhicule dans la bande de fréquence 3,9 - 4,5 MHz, ces balises présentant l'avantage d'être compactes, avec une longueur d'environ 50 cm et légères, avec un poids d'environ 5 kg.In accordance with the figure 2 the beacons 2 comprise a transmission circuit provided with a transmitting loop intended to emit electromagnetic waves representative of the information to be transmitted to the vehicle. Preferably, the beacons 2 are powered by radiation from an onboard transmitter by the antenna 1 of the railway vehicle, the latter providing the energy necessary for the operation of the beacon 2 which is crossed by the railway vehicle. This electrical power supply of the beacon 2 is made for example by integrating into the beacon an antenna circuit provided with a receiver coil connected in series with the primary of an isolation transformer, the secondary of the latter being connected to the circuit of the issue of the beacon. Advantageously, the tags 2 comply with the European standard EUROBALISE, that is to say they ensure the communication by magnetic coupling with the antenna 1 of the vehicle in the frequency band 3.9 - 4.5 MHz, these beacons having the advantage of being compact, with a length of about 50 cm and light, with a weight about 5 kg.

L'antenne 1 du véhicule comporte, de manière connue en soi, un premier circuit récepteur 3 qui est constitué par une boucle simple. Le premier circuit récepteur 3 est destiné à capter le signal émis par la balise 2 et est connecté à l'unité d'évaluation 6 du véhicule qui assure l'analyse des informations transmises par la balise 2 franchie par l'antenne 1.The antenna 1 of the vehicle comprises, in a manner known per se, a first receiver circuit 3 which is constituted by a single loop. The first receiver circuit 3 is intended to pick up the signal transmitted by the beacon 2 and is connected to the evaluation unit 6 of the vehicle which analyzes the information transmitted by the beacon 2 crossed by the antenna 1.

Conformément à l'invention, l'antenne 1 comporte également un second circuit récepteur 4 qui est constitué par une boucle en forme de huit, cette dernière étant sensiblement concentrique avec la boucle simple du premier circuit récepteur 3. Le second circuit récepteur 4 est également connecté à l'unité d'évaluation 6 du véhicule. De manière préférentielle, la taille de la boucle en huit est voisine de la taille de la boucle d'émission de la balise 2 afin d'atteindre une précision optimale sur la localisation de l'antenne 1.According to the invention, the antenna 1 also comprises a second receiver circuit 4 which is constituted by a loop in the form of eight, the latter being substantially concentric with the simple loop of the first receiver circuit 3. The second receiver circuit 4 is also connected to the evaluation unit 6 of the vehicle. Preferably, the size of the loop in eight is close to the size of the transmission loop of the beacon 2 in order to achieve an optimal accuracy on the location of the antenna 1.

Le fonctionnement du dispositif et du procédé de localisation ponctuelle du véhicule ferroviaire par rapport à une balise va maintenant être décrit.The operation of the device and the method of locating the railway vehicle with respect to a beacon will now be described.

Lorsque le véhicule approche d'une balise 2 et que l'émetteur de l'antenne 1 du véhicule se situe dans la zone de contact de la balise 2, c'est à dire que le niveau d'énergie capté par la balise au sol est suffisant pour assurer son fonctionnement, la balise 2 émet un signal électromagnétique représentatif de l'information à transmettre.When the vehicle approaches a beacon 2 and the transmitter of the antenna 1 of the vehicle is in the contact zone of the beacon 2, that is to say that the energy level captured by the beacon on the ground is sufficient to ensure its operation, the beacon 2 emits an electromagnetic signal representative of the information to be transmitted.

Ce signal est capté par l'antenne 1 du véhicule et notamment par la boucle formant le premier circuit récepteur 3. La puissance du signal capté par le premier circuit récepteur 3, en fonction du déplacement de l'antenne 1 portée par le véhicule suivant l'axe X, est représentée sur la figure 3. Conformément à cette figure 3, le premier circuit récepteur 3 de l'antenne 1 délivre un signal S3 qui est maximum sur une plage relativement large qui est centrée sur la zone de contact de la balise 2, le signal ainsi capté pouvant favorablement être utilisé par l'unité d'évaluation 6 pour analyser les informations transmises par la balise 2. En début et en fin de la zone de contact balise, l'amplitude du signal varie pour s'annuler en début et en sortie de la zone de contact avec toutefois la présence de lobes secondaires, de part et d'autre de la zone de contact.This signal is picked up by the antenna 1 of the vehicle and in particular by the loop forming the first receiver circuit 3. The power of the signal picked up by the first receiver circuit 3, as a function of the movement of the antenna 1 carried by the vehicle following the X axis, is represented on the figure 3 . In accordance with this figure 3 , the first receiver circuit 3 of the antenna 1 delivers a signal S 3 which is maximum over a relatively wide range which is centered on the contact zone of the beacon 2, the signal thus captured being able to be favorably used by the signal unit. evaluation 6 to analyze the information transmitted by the beacon 2. At the beginning and end of the beacon contact zone, the amplitude of the signal varies to cancel at the beginning and at the exit of the contact zone with however the presence of side lobes, of part and other of the contact area.

Dans le même temps, le signal émis par la balise 2 est capté par le second circuit récepteur 4 de l'antenne 1. La puissance du signal capté par le second circuit récepteur 4 en fonction du déplacement de l'antenne 1 suivant l'axe X est représentée sur la figure 4. Conformément à cette figure 4, le second circuit récepteur 4 délivre un signal S4 qui varie en amplitude au début et à la fin de la zone de contact de la balise 2 et qui est nul au centre de la zone de contact, c'est à dire lorsque le point de croisement de la boucle en huit est centré sur la boucle d'émission de la balise 2. Le signal S4 comporte également des lobes secondaires de part et d'autre de la zone de contact. De plus, conformément à la figure 5 qui représente la différence de phase entre le signal délivré par le second circuit récepteur 4 et le signal délivré capté par le premier circuit récepteur 3, il se produit un changement de phase de 180° entre le signal issu du premier circuit récepteur 3 et le signal issu du second circuit récepteur 4 lorsque le centre de la boucle en huit du second circuit récepteur 4 passe au droit du centre de la balise 2.At the same time, the signal emitted by the beacon 2 is picked up by the second receiver circuit 4 of the antenna 1. The power of the signal picked up by the second receiver circuit 4 as a function of the displacement of the antenna 1 along the axis X is represented on the figure 4 . In accordance with this figure 4 , the second receiver circuit 4 delivers a signal S 4 which varies in amplitude at the beginning and at the end of the contact zone of the beacon 2 and which is zero in the center of the contact zone, that is to say when the point The crossing of the loop in eight is centered on the transmitting loop of the beacon 2. The signal S 4 also has side lobes on either side of the contact zone. In addition, in accordance with figure 5 which represents the phase difference between the signal delivered by the second receiver circuit 4 and the delivered signal picked up by the first receiver circuit 3, there is a phase change of 180 ° between the signal from the first receiver circuit 3 and the signal from the second receiver circuit 4 when the center of the eight loop of the second receiver circuit 4 passes right of the center of the beacon 2.

Le procédé de localisation ponctuelle selon l'invention consiste donc à détecter, à l'aide de l'unité d'évaluation 6, le changement de phase de 180° entre le signal délivré par le second circuit récepteur 4 et le signal délivré par le premier circuit récepteur 3, afin d'en déduire l'instant où l'antenne 1 est centré sur la balise 2. Un tel procédé de localisation permet d'identifier l'instant où l'antenne 1 est centré sur la balise 2 avec une précision inférieure à ± 5 cm et donc de localiser ponctuellement le véhicule sur la voie ferrée avec une précision du même ordre.The spot localization method according to the invention therefore consists in detecting, with the aid of the evaluation unit 6, the phase change of 180 ° between the signal delivered by the second receiver circuit 4 and the signal delivered by the first receiver circuit 3, in order to deduce the moment when the antenna 1 is centered on the tag 2. Such a location method makes it possible to identify the moment when the antenna 1 is centered on the tag 2 with a accuracy less than ± 5 cm and therefore to locate the vehicle on the track punctually with a precision of the same order.

De manière avantageuse, et afin d'augmenter la sécurité du procédé de localisation, la localisation de l'antenne 1 par rapport à la balise 2 ne sera validée que si le signal émis par la balise 2 contient un message informationnel, l'unité d'évaluation 6 vérifiant ainsi que le changement de phase détecté est accompagné de la réception d'un message clair par le premier circuit récepteur 3 pour valider la localisation. De plus, la sécurité du procédé de localisation peut également être renforcée par la mise en place d'un seuil en tension afin de filtrer tous les changements de phase intempestifs qui peuvent apparaître sur les lobes secondaires existants aux extrémités du contact balise.Advantageously, and in order to increase the security of the location method, the location of the antenna 1 with respect to the beacon 2 will be validated only if the signal emitted by the beacon 2 contains an informational message, the unit d evaluation 6 thus verifying that the detected phase change is accompanied by the reception of a clear message by the first receiver circuit 3 to validate the location. Of Moreover, the security of the location method can also be enhanced by setting a voltage threshold in order to filter out any inadvertent phase changes that may appear on the existing side lobes at the ends of the beacon contact.

Un tel dispositif associé à un tel procédé présente ainsi l'avantage de permettre un recalage ponctuel, au passage de chaque balise, du véhicule ferroviaire sur la voie ferrée avec une précision inférieure à ± 5 cm, et cela en conservant une balise standard de type EUROBALISE très répandu sur les réseaux ferrés.Such a device associated with such a method thus has the advantage of allowing a one-off registration, at the passage of each beacon, of the railway vehicle on the railway with an accuracy of less than ± 5 cm, and this while retaining a standard type beacon. EUROBALISE very widespread on railway networks.

Il est ainsi possible en équipant un véhicule ferroviaire de l'antenne selon l'invention d'obtenir une précision sur le positionnement du véhicule suffisante pour l'exploitation des systèmes de contrôle automatique de train.It is thus possible by equipping a railway vehicle with the antenna according to the invention to obtain a precision on the positioning of the vehicle sufficient for the operation of automatic train control systems.

Le dispositif et le procédé de localisation selon l'invention permettent donc, en équipant simplement les véhicules ferroviaires d'une antenne selon l'invention, d'obtenir de manière très économique une très bonne précision sur les points de recalage du véhicule sur la voie ferrée.The device and the locating method according to the invention thus make it possible, simply by equipping the railway vehicles with an antenna according to the invention, to very economically obtain a very good accuracy on the points of registration of the vehicle on the track. railway.

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 (8)

  1. Device for localised tracking of a rail vehicle along a rail track fitted with a system (2) of balise-type beacons, said beacons (2) intended for transmitting information to the vehicle by emitting an electromagnetic signal, wherein said vehicle has an antenna (1) with a first receiver circuit (3) for capture of the electromagnetic signal emitted by the beacon (2) when traversed by the antenna (1), characterised in that the beacon (2) has a transmitter circuit (5) formed by a loop, and in that said antenna (1) has a second receiver circuit (4) in eight loop form to allow precise determination of the instant when the antenna (1) is centred on the beacon (2), wherein the external dimension of the eight loop forming the second receiver circuit (4) is essentially equal to the dimension of the loop of the transmitter circuit (5) of said beacon (2).
  2. Device for localised tracking of a vehicle according to claim 1, characterised in that the first receiver circuit (3) is in the form of a single loop.
  3. Device for localised tracking of a vehicle according to any one of claims 1 to 2, characterised in that the beacon (2) is supplied with power by radiation and comprises an antenna circuit that captures the energy radiated by a transmitter carried on-board the rail vehicle supplying the necessary energy for a transmitter circuit (5) of said beacon (2).
  4. Device for localised tracking of a vehicle according to any one of claims 1 to 3, characterised in that the second receiver circuit (4) is centred on said first receiver circuit (3) so that the crossing point of the eight loop forming the second receiver circuit (4) is essentially located at the centre of the loop forming the first receiver circuit (3).
  5. Device for localised tracking of a vehicle according to any one of claims 1 to 4, characterised in that the system (2) of balise-type beacons complies with the EUROBALISE standard.
  6. Method for localised tracking of a vehicle fitted with a device according to any one of claims 1 to 5, characterised in that the phase change of the signal supplied by the second receiver circuit (4) in relation to the signal supplied by the first receiver circuit (3) is detected to determine therefrom the instant when the antenna (1) is centred on the beacon (2), wherein this detection is filtered by a threshold in order to eliminate any ill-timed phase changes, which can occur on the secondary lobes existing at the ends of the beacon contact.
  7. Antenna (1) enabling the capture of electromagnetic waves emitted by a beacon (2) comprising a transmitter circuit (5) formed by a loop, wherein said antenna (1) has a first receiver circuit (3) in the form of a single loop to allow receipt of information communicated by said beacon (2), characterised in that it has a second receiver circuit (4) in eight loop form to enable the precise determination of the instant when the antenna (1) is centred on the beacon (2), wherein the external dimension of the eight loop forming the second receiver circuit (4) is essentially equal to the dimension of the loop of the transmitter circuit (5) of said beacon (2).
  8. Antenna (1) according to claim 7, characterised in that it is carried on-board a rail vehicle and in that it cooperates with beacons (2) compliant with the EUROBALISE standard.
EP01403328A 2001-01-22 2001-12-20 Device and method for intermittently locating a railway vehicle along a track with beacons and antenna for such a device Expired - Lifetime EP1227024B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0100812 2001-01-22
FR0100812A FR2819772B1 (en) 2001-01-22 2001-01-22 DEVICE AND METHOD FOR THE PUNCTUAL LOCATION OF A RAIL VEHICLE ALONG A RAIL TRACK EQUIPPED WITH BEACONS AND ANTENNA FOR EQUIPPING SUCH A DEVICE

Publications (2)

Publication Number Publication Date
EP1227024A1 EP1227024A1 (en) 2002-07-31
EP1227024B1 true EP1227024B1 (en) 2009-03-11

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EP01403328A Expired - Lifetime EP1227024B1 (en) 2001-01-22 2001-12-20 Device and method for intermittently locating a railway vehicle along a track with beacons and antenna for such a device

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US (1) US6693562B2 (en)
EP (1) EP1227024B1 (en)
JP (1) JP2002264810A (en)
AT (1) ATE425063T1 (en)
CA (1) CA2367310C (en)
DE (1) DE60137909D1 (en)
DK (1) DK1227024T3 (en)
ES (1) ES2324019T3 (en)
FR (1) FR2819772B1 (en)
HK (1) HK1050168B (en)
PT (1) PT1227024E (en)

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RU2568243C2 (en) * 2010-05-21 2015-11-10 Альстом Транспорт Текнолоджис Antenna for installation on railway vehicle for locating said vehicle along railway track, equipped with ground signal beacon system
WO2016012106A1 (en) 2014-07-25 2016-01-28 Siemens Aktiengesellschaft System and method for locating the center of a beacon equipping guided vehicle routes
EP2985629A1 (en) 2014-08-14 2016-02-17 Siemens Rail Automation S.A.U. System and method for detecting and locating the center of beacons installed along guided vehicle routes

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RU2568243C2 (en) * 2010-05-21 2015-11-10 Альстом Транспорт Текнолоджис Antenna for installation on railway vehicle for locating said vehicle along railway track, equipped with ground signal beacon system
WO2013135533A1 (en) 2012-03-15 2013-09-19 Alstom Transport Sa On-board system for generating a positioning signal for a rail vehicle
WO2016012106A1 (en) 2014-07-25 2016-01-28 Siemens Aktiengesellschaft System and method for locating the center of a beacon equipping guided vehicle routes
EP2985629A1 (en) 2014-08-14 2016-02-17 Siemens Rail Automation S.A.U. System and method for detecting and locating the center of beacons installed along guided vehicle routes
WO2016023652A1 (en) 2014-08-14 2016-02-18 Siemens Rail Automation S.A.U. System and method for detecting and locating the center of beacons installed along guided vehicle routes

Also Published As

Publication number Publication date
ATE425063T1 (en) 2009-03-15
FR2819772B1 (en) 2004-05-28
JP2002264810A (en) 2002-09-18
FR2819772A1 (en) 2002-07-26
HK1050168A1 (en) 2003-06-13
US20020121991A1 (en) 2002-09-05
US6693562B2 (en) 2004-02-17
CA2367310A1 (en) 2002-07-22
HK1050168B (en) 2009-12-24
CA2367310C (en) 2009-06-30
DE60137909D1 (en) 2009-04-23
PT1227024E (en) 2009-06-19
EP1227024A1 (en) 2002-07-31
ES2324019T3 (en) 2009-07-29
DK1227024T3 (en) 2009-07-06

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