EP0699573B1 - Device and method for the transmission of information by beacons and beacon for use in said device - Google Patents
Device and method for the transmission of information by beacons and beacon for use in said device Download PDFInfo
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- EP0699573B1 EP0699573B1 EP95401953A EP95401953A EP0699573B1 EP 0699573 B1 EP0699573 B1 EP 0699573B1 EP 95401953 A EP95401953 A EP 95401953A EP 95401953 A EP95401953 A EP 95401953A EP 0699573 B1 EP0699573 B1 EP 0699573B1
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- Prior art keywords
- messages
- beacon
- control device
- vehicle
- mns
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims description 11
- 230000003111 delayed effect Effects 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims 3
- 230000001934 delay Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 description 5
- 230000001427 coherent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
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Classifications
-
- 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
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
Definitions
- the present invention relates to a device and a method for transmission of information by a beacon so that a beacon and device, control for an information transmission device.
- These tags are passive tags and are arranged on the ground.
- Figure 1 shows a transmission device state of the art information including a equipment on board a railway vehicle and a floor installation.
- the information transmission device shown in Figure 1 includes ground installations 1, 2 and on-board equipment 3, 4 in a vehicle rail 5.
- Ground installations consist of a beacon 1 and its control device 2, the assembly being connected by means of a transmission line 7.
- the beacon 1 is fixed on crosspieces, in the axis a railway track 6.
- the on-board equipment mainly consists an antenna 3 and an evaluation unit 4.
- the evaluation unit 4 which can be a computer, is powered by its own converter and is connected to antenna 3.
- the antenna 3 is located under the rail vehicle 5, preferably at the front of it.
- the tags used in the control systems allow the transmission of information on signaling status downstream of their geographic position.
- This information is received using an antenna located under the train.
- the tag emits a series of bits in series, for example at a speed of 50 kbit / s, using equipment control electronics responsible for developing a message.
- These tags have a fixed length, which defines a region of space in which the antenna on board of a train is capable of receiving the transmitted message.
- This length of capture also called length contact, allows to transmit a certain number of bits of a message to transmit.
- a binary message is read between a control device and the train via a beacon.
- a synchronization takes place between the start of the message and the arrival of the train on the beacon and therefore at the start of the reading the tag.
- FIGS. 2A to 2C illustrate, respectively, the emission of Mn messages by means of a state tag the technique, the reading of the message by means of the antenna on-board and then the reconstruction of the message sent from message read.
- FIG. 2A shows a series of Mn messages identical emitted by a control device and transmitted via a beacon to an on-board antenna.
- the on-board antenna has a reading window predetermined which is a function of its structure.
- the binary message read by the on-board antenna may not not match the full Mn message, but match the more often to a juxtaposition of two parts complementary to two successive Mn messages.
- Figure 2B illustrates this binary message read by the on-board antenna.
- FIG. 2C illustrates the binary message reconstructed at board the train.
- the antenna capture length therefore does not allow the reception of more than one message.
- the message reconstituted on board the train is then inconsistent because composed of two parts of a first and a second messages sent with different content.
- An object of the invention is therefore a device for transmission of information by tags not presenting this disadvantage.
- Another object of the invention is a device for transmission of information by beacons allowing everything instant reconstitution of coherent messages.
- the device for message transmission contains the characteristics according to claim 1.
- the invention also relates to a beacon and a control device. for a message transmission device containing the characteristics according to claim 5.
- the invention also relates to a method of transmission of messages containing the characteristics according to claim 6.
- FIGS. 3A to 3E illustrate the delayed emission of switching C between Mn messages and Mn + 1 messages by means of a tag conforming to the principle of the invention.
- This information relating to the presence of a train allows to generate a delay in the switching C of the content messages.
- control device emits one or several additional Mn messages Mns to the beacon so as to delay switching C between messages Mn and Mn + 1 messages.
- FIG. 4 represents a block diagram of a mode preferred embodiment of a tag used in the beacon information transmission device according to the invention.
- Beacon 1 used in the transmission system information is passive equipment, i.e. having no own source of electrical energy permed.
- tag 1 is only remotely powered when a train 5 is present below the beacon 1.
- the remote supply is carried out in a known manner by coupling between the antenna 3 of the train and the beacon 1.
- the tag 1 is therefore not capable of providing energy to power a power line 7 of transmission to the control device 2.
- These superimposed signals consist of a voltage alternative corresponding to the messages sent Mn and a DC polarization of the transmission line corresponding to the information relating to the presence of a train.
- the tag 1 In the presence of a train 5, the tag 1 short-circuits the end of the transmission line from the control device 2 for direct current only.
- the control device 2 then detects a short circuit on transmission line 7 for current continuous only and infers information relating to the presence of a train 5 directly above the connected beacon 1 to the short-circuited line.
- the alternating voltage corresponding to the messages sent not being short-circuited by tag 1, the messages can be sent by the control device 2 to the antenna 3 on board by means of the beacon 1.
- the first interface 8 sensitive only to alternative signals has the function of receiving messages sent by the control device 2 and intended for be read by the on-board antenna 3.
- the second interface 9 sensitive only to current continuous has the function of short-circuiting the line of transmission 7 for direct current only.
- the information transmission method Mn comprises a first step consisting in superimposing, on the line of transmission 7 connecting the beacon 1 and the device transmission 2, by means of the control device 2, a AC voltage corresponding to the messages sent and a direct current.
- a second step is to short-circuit for direct current only, using the second interface 9, the transmission line 7, during the reception, by means of the second interface 9, of a information 10 relating to the presence of the vehicle 5 to proximity to beacon 1.
- the next step is to detect the short circuit by means of the control device 2.
- a fourth step is to delay, using the control device 2, switching C between the Mn messages and Mn + 1 messages, by transmission, always by means of the control device 2, one or several additional Mn messages Mns.
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Radar Systems Or Details Thereof (AREA)
- Mobile Radio Communication Systems (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Multi-Process Working Machines And Systems (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Near-Field Transmission Systems (AREA)
- General Factory Administration (AREA)
- Small-Scale Networks (AREA)
Abstract
Description
La présente invention concerne un dispositif et un procédé de transmission d'informations par une balise ainsi qui une balise et un dispositif, de commande pour un dispositif de transmission d'informations.The present invention relates to a device and a method for transmission of information by a beacon so that a beacon and device, control for an information transmission device.
Les dispositifs de transmission d'informations de l'art antérieur font appel à des balises ponctuelles (voir, par exemple, l'article dans Ericsson Review, No. 1, 1981, p.22-29, de A. Sjöberg, portant le titre "Automatic Train Control").Information transmission devices of prior art use point tags (see, for example, the article in Ericsson Review, No. 1, 1981, p.22-29, by A. Sjöberg, entitled "Automatic Train Control ").
Ces balises sont des balises passives et sont disposées au sol.These tags are passive tags and are arranged on the ground.
La figure 1 représente un dispositif de transmission d'informations de l'état de la technique comprenant un équipement embarqué dans un véhicule ferroviaire et une installation au sol.Figure 1 shows a transmission device state of the art information including a equipment on board a railway vehicle and a floor installation.
Le dispositif de transmission d'informations
représenté à la figure 1 comprend des installations au sol
1, 2 et des équipements embarqués 3, 4 dans un véhicule
ferroviaire 5.The information transmission device
shown in Figure 1 includes
Les installations au sol se composent d'une balise 1
et de son dispositif de commande 2, l'ensemble étant relié
au moyens d'une ligne de transmission 7.Ground installations consist of a
La balise 1 est fixée sur des traverses, dans l'axe
d'une voie ferroviaire 6.The
Les équipements embarqués se composent principalement
d'une antenne 3 et d'une unité d'évaluation 4.The on-board equipment mainly consists
an
L'unité d'évaluation 4, qui peut être un ordinateur,
est alimentée par son propre convertisseur et est connecté à
l'antenne 3.The evaluation unit 4, which can be a computer,
is powered by its own converter and is connected to
L'antenne 3 est située sous le véhicule ferroviaire 5,
de préférence à l'avant de celui-ci.The
Les balises utilisées dans les systèmes de contrôle, par exemple de la vitesse d'un train, permettent la transmission d'informations sur l'état de la signalisation en aval de leur position géographique. The tags used in the control systems, for example the speed of a train, allow the transmission of information on signaling status downstream of their geographic position.
La réception de ces informations s'effectue à l'aide d'une antenne située sous le train.This information is received using an antenna located under the train.
La balise émet une série de bits en série, par exemple à un débit de 50 kbits/s, au moyen d'un équipement électronique de commande chargé d'élaborer un message.The tag emits a series of bits in series, for example at a speed of 50 kbit / s, using equipment control electronics responsible for developing a message.
Ces balises ont une longueur fixe, ce qui définit une région de l'espace dans laquelle l'antenne embarquée à bord d'un train est capable de recevoir le message émis.These tags have a fixed length, which defines a region of space in which the antenna on board of a train is capable of receiving the transmitted message.
Cette longueur de captation, encore appelée longueur de contact, permet de transmettre un certain nombre de bits d'un message à transmettre.This length of capture, also called length contact, allows to transmit a certain number of bits of a message to transmit.
La lecture d'un message binaire s'effectue entre un dispositif de commande et le train via une balise. Une synchronisation s'effectue entre le début du message et l'arrivée du train sur la balise et donc au début de la lecture de la balise.A binary message is read between a control device and the train via a beacon. A synchronization takes place between the start of the message and the arrival of the train on the beacon and therefore at the start of the reading the tag.
Les figures 2A à 2C illustrent, respectivement, l'émission de messages Mn au moyen d'une balise de l'état de la technique, la lecture du message au moyen de l'antenne embarquée puis la reconstitution du message émis à partir du message lu.FIGS. 2A to 2C illustrate, respectively, the emission of Mn messages by means of a state tag the technique, the reading of the message by means of the antenna on-board and then the reconstruction of the message sent from message read.
La figure 2A montre une suite de messages Mn identiques émis par un dispositif de commande et transmis via une balise à une antenne embarquée.FIG. 2A shows a series of Mn messages identical emitted by a control device and transmitted via a beacon to an on-board antenna.
L'antenne embarquée dispose d'une fenêtre de lecture prédéterminée qui est fonction de sa structure.The on-board antenna has a reading window predetermined which is a function of its structure.
Le message binaire lu par l'antenne embarquée peut ne pas correspondre au message Mn complet, mais correspond le plus souvent à une juxtaposition de deux parties complémentaires de deux messages Mn successifs.The binary message read by the on-board antenna may not not match the full Mn message, but match the more often to a juxtaposition of two parts complementary to two successive Mn messages.
La figure 2B illustre ce message binaire lu par l'antenne embarquée.Figure 2B illustrates this binary message read by the on-board antenna.
La figure 2C illustre le message binaire reconstitué à bord du train.FIG. 2C illustrates the binary message reconstructed at board the train.
A haute vitesse, la longueur de captation de l'antenne ne permet donc pas la réception de plus d'un message. At high speed, the antenna capture length therefore does not allow the reception of more than one message.
Une conséquence de ce qui précède est qu'il est possible à partir de la lecture d'un seul message émis de reconstituer ce message émis à la seule condition que les deux parties de messages disponibles appartiennent à des messages émis successifs aux contenus identiques.A consequence of the above is that it is possible from reading a single message sent from reconstitute this message sent on the only condition that the two parts of available messages belong to successive messages with identical content.
Il apparaít donc une difficulté lorsque l'équipement chargé d'établir les messages émis commute le contenu de ces messages, par exemple pour prendre en compte un changement d'état de la signalisation.It therefore appears a difficulty when the equipment responsible for establishing the messages sent switches the content of these messages, for example to reflect a change signaling status.
Une conséquence de cette commutation du contenu des messages émis est que les messages émis avant et après cette commutation ont un contenu différent.A consequence of this switching of the content of messages sent is that messages sent before and after this switching have different content.
Le message reconstitué à bord du train est alors incohérent car composé de deux parties d'un premier et d'un second messages émis aux contenus différents.The message reconstituted on board the train is then inconsistent because composed of two parts of a first and a second messages sent with different content.
Aussi un but de l'invention est-il un dispositif de transmission d'informations par balises ne présentant pas cet inconvénient.An object of the invention is therefore a device for transmission of information by tags not presenting this disadvantage.
Un autre but de l'invention est un dispositif de transmission d'information par balises permettant à tout instant la reconstitution de messages cohérents.Another object of the invention is a device for transmission of information by beacons allowing everything instant reconstitution of coherent messages.
Conformément à l'invention, le dispositif de
transmission de messages contient les caractéristiques selon
la revendication 1. In accordance with the invention, the device for
message transmission contains the characteristics according to
L'invention porte également sur une balise et un dispositif de commande
pour un dispositif de transmission de messages
contenant les caractéristiques selon la revendication 5.The invention also relates to a beacon and a control device.
for a message transmission device
containing the characteristics according to
L'invention porte également sur un procédé de transmission de messages contenant les caractéristiques selon la revendication 6. The invention also relates to a method of transmission of messages containing the characteristics according to claim 6.
D'autres buts, caractéristiques et avantages de l'invention apparaítront à la lecture de la description du mode de réalisation préféré du dispositif de transmission d'informations par balises, description faite en liaison avec les dessins dans lesquels:
- La figure 1 représente un dispositif de transmission d'informations de l'état de la technique comprenant un équipement embarqué dans un véhicule ferroviaire et une installation au sol,
- Les figures 2A à 2C illustrent, respectivement, l'émission de messages Mn au moyen d'une balise de l'état de la technique, la lecture du message au moyen de l'antenne embarquée puis la reconstitution du message émis à partir du message lu, selon un principe connu de l'état de la technique,
- Les figures 3A à 3E illustrent, respectivement, l'émission de messages Mn au moyen d'une balise de l'état de la technique, l'apparition d'une information de la présence d'un train, l'émission retardée de la commutation entre les messages Mn et les messages Mn+1 au moyen d'une balise conforme au principe de l'invention, la lecture du message au moyen de l'antenne embarquée puis la reconstitution du message émis à partir du message lu,
- La figure 4 représente un schéma synoptique d'un mode de réalisation préféré d'une balise utilisée dans le dispositif de transmission d'informations par balises conforme à l'invention.
- FIG. 1 represents a device for transmitting state of the art information comprising equipment on board a railway vehicle and a ground installation,
- FIGS. 2A to 2C illustrate, respectively, the transmission of messages Mn by means of a beacon of the state of the art, the reading of the message by means of the on-board antenna then the reconstruction of the message transmitted from the message read, according to a principle known from the state of the art,
- FIGS. 3A to 3E illustrate, respectively, the transmission of messages Mn by means of a beacon of the state of the art, the appearance of information of the presence of a train, the delayed transmission of the switching between the messages Mn and the messages Mn + 1 by means of a beacon in accordance with the principle of the invention, the reading of the message by means of the on-board antenna then the reconstitution of the message transmitted from the message read,
- FIG. 4 represents a block diagram of a preferred embodiment of a beacon used in the device for transmitting information by beacons according to the invention.
Les figures 1 et 2 sont décrites ci-dessus.Figures 1 and 2 are described above.
Les figures 3A à 3E illustrent l'émission retardée de la commutation C entre les messages Mn et les messages Mn+1 au moyen d'une balise conforme au principe de l'invention.FIGS. 3A to 3E illustrate the delayed emission of switching C between Mn messages and Mn + 1 messages by means of a tag conforming to the principle of the invention.
Pour éviter que le message reconstitué ne soit incohérent, il est possible de tenir le dispositif de commande informé de la présence d'un train à l'aplomb de la balise.To prevent the reconstructed message from being inconsistent, it is possible to hold the device command informed of the presence of a train above the tag.
Cette information relative à la présence d'un train permet de générer un retard dans la commutation C du contenu des messages.This information relating to the presence of a train allows to generate a delay in the switching C of the content messages.
Lorsqu'un train arrive à l'aplomb d'une balise, celle-ci transmet au dispositif de commande une information relative à la présence du train qui permet au dispositif de commande de retarder la commutation C du contenu des messages émis.When a train arrives below a beacon, it is transmits information to the control device relating to the presence of the train which allows the device to command to delay switching C of the content of messages sent.
Pour ce faire, le dispositif de commande émet un ou plusieurs messages Mn supplémentaires Mns vers la balise de manière à retarder la commutation C entre les messages Mn et les messages Mn+1.To do this, the control device emits one or several additional Mn messages Mns to the beacon so as to delay switching C between messages Mn and Mn + 1 messages.
Il résulte de ce qui précède que les deux demi-messages lus par l'antenne embarquée sont cohérents et permettrons donc la reconstitution d'un message également cohérent.It follows from the above that the two half-messages read by the on-board antenna are consistent and so allow the reconstruction of a message also coherent.
La figure 4 représente un schéma synoptique d'un mode de réalisation préféré d'une balise utilisée dans le dispositif de transmission d'informations par balises conforme à l'invention.FIG. 4 represents a block diagram of a mode preferred embodiment of a tag used in the beacon information transmission device according to the invention.
La balise 1 utilisée dans le système de transmission d'informations est un équipement passif, c'est à dire n'ayant pas de source d'énergie électrique propre permanente. Beacon 1 used in the transmission system information is passive equipment, i.e. having no own source of electrical energy permed.
De plus, la balise 1 est téléalimenté uniquement
lorsqu'un train 5 est présent à l'aplomb de la balise 1. La
télé alimentation est effectuée de façon connue par couplage
entre l'antenne 3 du train et la balise 1.In addition,
La balise 1 n'est donc pas capable de fournir de
l'énergie pour alimenter une ligne électrique 7 de
transmission vers le dispositif de commande 2.The
L'information relative à la présence d'un train est
élaboré, conformément à l'invention, par la superposition
par le dispositif de commande 2 de deux signaux sur la ligne
de transmission 7 vers la balise 1.Information relating to the presence of a train is
developed, in accordance with the invention, by superposition
by the control device 2 of two signals on the line
7 to the
Ces signaux superposés sont constitués d'une tension alternative correspondant aux messages émis Mn et d'une polarisation en courant continu de la ligne de transmission correspondant à l'information relative à la présence d'un train.These superimposed signals consist of a voltage alternative corresponding to the messages sent Mn and a DC polarization of the transmission line corresponding to the information relating to the presence of a train.
En présence d'un train 5, la balise 1 court-circuite
l'extrémité de la ligne de transmission en provenance du
dispositif de commande 2 pour le courant continu uniquement.In the presence of a
Le dispositif de commande 2 détecte alors un court-circuit
sur la ligne de transmission 7 pour le courant
continu uniquement et en déduit une information relative à
la présence d'un train 5 à l'aplomb de la balise 1 connectée
à la ligne court-circuitée.The control device 2 then detects a short circuit
on transmission line 7 for current
continuous only and infers information relating to
the presence of a
La tension alternative correspondant aux messages émis
n'étant pas court-circuitée par la balise 1, les messages
pourront être émis par le dispositif de commande 2 vers
l'antenne 3 embarquée au moyen de la balise 1.The alternating voltage corresponding to the messages sent
not being short-circuited by
La balise 1 est donc connectée à le dispositif de commande 2 par une ligne de transmission 7 et se compose:
- d'une première interface 8 sensible uniquement aux signaux alternatifs et
- d'une seconde interface 9 sensible uniquement au courant continu.
- a first interface 8 sensitive only to alternating signals and
- a second interface 9 sensitive only to direct current.
La première interface 8 sensible uniquement aux
signaux alternatifs a pour fonction la réception des
messages émis par le dispositif de commande 2 et destinés à
être lu par l'antenne embarquée 3.The first interface 8 sensitive only to
alternative signals has the function of receiving
messages sent by the control device 2 and intended for
be read by the on-
La seconde interface 9 sensible uniquement au courant continu a pour fonction de court-circuiter la ligne de transmission 7 pour le courant continu uniquement.The second interface 9 sensitive only to current continuous has the function of short-circuiting the line of transmission 7 for direct current only.
Il résulte de ce qui précède un procédé de
transmission d'informations Mn au moyen d'une balise 1
commandée par un dispositif de commande 2.It follows from the above a method of
transmission of information Mn by means of a
Le procédé de transmission d'informations Mn comporte
une première étape consistant à superposer, sur la ligne de
transmission 7 reliant la balise 1 et le dispositif de
transmission 2, au moyen du dispositif de commande 2, une
tension alternative correspondant aux messages émis et un
courant continu.The information transmission method Mn comprises
a first step consisting in superimposing, on the line of
transmission 7 connecting the
Une deuxième étape consiste à mettre en court-circuit
pour le courant continu seulement, au moyen de la seconde
interface 9, la ligne de transmission 7, lors de la
réception, au moyen de la seconde interface 9, d'une
information 10 relative à la présence du véhicule 5 à
proximité de la balise 1.A second step is to short-circuit
for direct current only, using the second
interface 9, the transmission line 7, during the
reception, by means of the second interface 9, of a
L'étape suivante consiste à détecter le court-circuit au moyen du dispositif de commande 2.The next step is to detect the short circuit by means of the control device 2.
Une quatrième étape consiste à retarder, au moyen du dispositif de commande 2, la commutation C entre les messages Mn et les messages Mn+1, par la transmission, toujours au moyen du dispositif de commande 2, d'un ou plusieurs messages Mn supplémentaires Mns.A fourth step is to delay, using the control device 2, switching C between the Mn messages and Mn + 1 messages, by transmission, always by means of the control device 2, one or several additional Mn messages Mns.
Claims (6)
- A device for transmitting messages (Mn, Mn+1, Mns) comprising a beacon (1), a control device (2), an antenna (3) and detects means (9, 10) for detecting the presence of a vehicle (5) near said beacon (1), the beacon (1) being controlled by the control device (2), said messages (Mn, Mn+1, Mns) being transmitted to the antenna (3) by said beacon (1), said antenna (3) being onboard said vehicle (5), said control device (2) being adapted to effect a changeover (C) between first messages (Mn) and second messages (Mn+1), said device being characterised in that in response to detection of the presence of said vehicle (5) rear said beacon (1) by said detector means (9, 10), said control device (2) delays said changeover (C) between said first messages (Mn) and the second messages (Mn+1) for as long as the vehicle (5) is present by sending one or more additional first messages (Mns).
- A device according to claim 1 wherein the control device (2) superposes a direct current and an AC voltage corresponding to the transmitted messages (Mn, Mn+1, Mns) on a transmission line (7) connected to the beacon (1).
- A device according to claim 1 or claim 2 wherein the changeover (C) is delayed when said vehicle (5) is present at the location of said beacon (1).
- A device according to claim 2 or claim 3 wherein the beacon (1) includes:a first interface (8) for alternating current signals only the function of which is to receive said messages (Mn, Mn+1, Mns) transmitted by said control device (2) and to transmit them so that the on-board antenna (3) on the vehicle (5) can read the messages (Mn, Mn+1, Mns) and,a second interface (9) for direct current only the function of which is to short-circuit said transmission line (7) for direct current only on receiving an indication (10) of the presence of said vehicle (5) near said beacon (1).
- A beacon (1) and a control device (2) for a device for transmitting messages (Mn, Mn+1, Mns), the beacon being connected to the control device (2) by a transmission line (7), characterised in that the beacon includes a first interface (8) for alternating current signals only, the function of which is to receive said messages (Mn, Mn+1, Mns) sent by said control device (2) and then to transmit them so that an on-board antenna (3) on a vehicle (5) can read the messages (Mn, Mn+1, Mns), and a second interface (9) adapted to transmit two said control device (2) a signal relating to the presence of a vehicle (5) near said beacon (1), said second interface (9) being a direct current only interface the function of which is to short-circuit said transmission line (7) for said direct current only on receiving an indication (10) relating to the presence of said vehicle (5) near said beacon (1), and the control device (2) in response to the detection of the short-circuit, delaying changeover (C) between first messages (Mn) and second messages (Mn+1) for as long as the presence of the vehicle (5) is detected by transmitting one or more additional first messages (Mns).
- A method of transmitting messages (Mn, Mn+1, Mns) by means of a beacon (1) controlled by a control device (2), characterised by the following steps:superposing by means of said control device (2) an alternating current voltage corresponding to said messages (Mn, Mn+1, Mns) and a direct current on a transmission line (7) connecting said beacon (1) and said control device (2),short-circuiting by means of an interface (9) for said direct current only said transmission line (7) in response to reception by the interface (9) of an indication (10) relating to the presence of said vehicle (5) near said beacon (1),detecting the short-circuit by said control device (2) and, in response to such detection, by means of said control device (2), delaying changeover (C) between first messages (Mn) and second messages (Mn+1) for as long as the presence of the vehicle (5) is detected by sending one or more additional first messages (Mns) by means of said control device (2).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9410476 | 1994-08-31 | ||
| FR9410476A FR2724075B1 (en) | 1994-08-31 | 1994-08-31 | DEVICE AND METHOD FOR TRANSMITTING INFORMATION BY BEACONS AND BEACON USED IN SUCH A DEVICE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0699573A1 EP0699573A1 (en) | 1996-03-06 |
| EP0699573B1 true EP0699573B1 (en) | 1998-07-01 |
Family
ID=9466601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95401953A Expired - Lifetime EP0699573B1 (en) | 1994-08-31 | 1995-08-25 | Device and method for the transmission of information by beacons and beacon for use in said device |
Country Status (20)
| Country | Link |
|---|---|
| EP (1) | EP0699573B1 (en) |
| KR (1) | KR100344604B1 (en) |
| CN (1) | CN1135181C (en) |
| AT (1) | ATE167837T1 (en) |
| AU (1) | AU699130B2 (en) |
| BG (1) | BG62867B1 (en) |
| BR (1) | BR9503850A (en) |
| CZ (1) | CZ287266B6 (en) |
| DE (1) | DE69503200T2 (en) |
| DK (1) | DK0699573T3 (en) |
| ES (1) | ES2119334T3 (en) |
| FI (1) | FI107793B (en) |
| FR (1) | FR2724075B1 (en) |
| GR (1) | GR3027692T3 (en) |
| HU (1) | HU221080B1 (en) |
| NO (1) | NO310799B1 (en) |
| PL (1) | PL178868B1 (en) |
| RO (1) | RO114431B1 (en) |
| SK (1) | SK281145B6 (en) |
| ZA (1) | ZA957274B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1562304A1 (en) * | 2004-02-06 | 2005-08-10 | Siemens Schweiz AG | Data transmission method by means of field polarisation in near field transmission |
| US20070078574A1 (en) * | 2005-09-30 | 2007-04-05 | Davenport David M | System and method for providing access to wireless railroad data network |
| US20080042015A1 (en) * | 2006-08-15 | 2008-02-21 | Plawecki Daniel W | System and Method for Acquiring Position of Rolling Stock |
| FR3078310A1 (en) * | 2018-02-27 | 2019-08-30 | Alstom Transport Technologies | METHOD FOR CONTROLLING RAILWAY VEHICLES, DEVICE AND SYSTEM THEREOF |
| CN113844504B (en) * | 2021-08-31 | 2024-03-29 | 通号城市轨道交通技术有限公司 | Vehicle-mounted ATP control method and system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2902238C2 (en) * | 1979-01-20 | 1986-07-24 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Device for train tail monitoring |
| JP2549385B2 (en) * | 1987-07-15 | 1996-10-30 | 日本信号株式会社 | Information transmission device |
| FR2640570B1 (en) * | 1988-12-21 | 1991-06-14 | Matra Transport | VEHICLE IDENTIFICATION DEVICE FOR TRANSPORTATION INSTALLATION |
-
1994
- 1994-08-31 FR FR9410476A patent/FR2724075B1/en not_active Expired - Fee Related
-
1995
- 1995-08-16 HU HU9502419A patent/HU221080B1/en not_active IP Right Cessation
- 1995-08-25 DE DE69503200T patent/DE69503200T2/en not_active Expired - Lifetime
- 1995-08-25 EP EP95401953A patent/EP0699573B1/en not_active Expired - Lifetime
- 1995-08-25 DK DK95401953T patent/DK0699573T3/en active
- 1995-08-25 ES ES95401953T patent/ES2119334T3/en not_active Expired - Lifetime
- 1995-08-25 AT AT95401953T patent/ATE167837T1/en not_active IP Right Cessation
- 1995-08-28 AU AU30270/95A patent/AU699130B2/en not_active Ceased
- 1995-08-28 FI FI954027A patent/FI107793B/en active
- 1995-08-29 BG BG99891A patent/BG62867B1/en unknown
- 1995-08-30 NO NO19953399A patent/NO310799B1/en not_active IP Right Cessation
- 1995-08-30 RO RO95-01539A patent/RO114431B1/en unknown
- 1995-08-30 CN CNB951163019A patent/CN1135181C/en not_active Expired - Fee Related
- 1995-08-30 PL PL95310230A patent/PL178868B1/en not_active IP Right Cessation
- 1995-08-30 KR KR1019950027501A patent/KR100344604B1/en not_active IP Right Cessation
- 1995-08-30 CZ CZ19952216A patent/CZ287266B6/en not_active IP Right Cessation
- 1995-08-30 ZA ZA957274A patent/ZA957274B/en unknown
- 1995-08-30 BR BR9503850A patent/BR9503850A/en not_active IP Right Cessation
- 1995-08-31 SK SK1080-95A patent/SK281145B6/en not_active IP Right Cessation
-
1998
- 1998-08-20 GR GR980401869T patent/GR3027692T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP0699573A1 (en) | 1996-03-06 |
| FI954027A0 (en) | 1995-08-28 |
| KR100344604B1 (en) | 2006-03-27 |
| CN1135181C (en) | 2004-01-21 |
| GR3027692T3 (en) | 1998-11-30 |
| DK0699573T3 (en) | 1998-11-09 |
| SK281145B6 (en) | 2000-12-11 |
| FR2724075A1 (en) | 1996-03-01 |
| PL310230A1 (en) | 1996-03-04 |
| BG62867B1 (en) | 2000-09-29 |
| KR960008648A (en) | 1996-03-22 |
| DE69503200T2 (en) | 1999-01-07 |
| NO953399D0 (en) | 1995-08-30 |
| ATE167837T1 (en) | 1998-07-15 |
| AU699130B2 (en) | 1998-11-26 |
| CN1127714A (en) | 1996-07-31 |
| PL178868B1 (en) | 2000-06-30 |
| SK108095A3 (en) | 1996-04-03 |
| RO114431B1 (en) | 1999-04-30 |
| CZ221695A3 (en) | 1996-03-13 |
| FI954027A (en) | 1996-03-01 |
| BR9503850A (en) | 1996-09-17 |
| HUT73544A (en) | 1996-08-28 |
| HU221080B1 (en) | 2002-07-29 |
| NO310799B1 (en) | 2001-08-27 |
| CZ287266B6 (en) | 2000-10-11 |
| DE69503200D1 (en) | 1998-08-06 |
| BG99891A (en) | 1996-04-30 |
| ZA957274B (en) | 1996-04-04 |
| FI107793B (en) | 2001-10-15 |
| AU3027095A (en) | 1996-03-14 |
| NO953399L (en) | 1996-03-01 |
| FR2724075B1 (en) | 1997-01-03 |
| HU9502419D0 (en) | 1995-10-30 |
| ES2119334T3 (en) | 1998-10-01 |
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