WO2007134992A1 - Device for detecting the occupied or free status of a section of track - Google Patents

Device for detecting the occupied or free status of a section of track Download PDF

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Publication number
WO2007134992A1
WO2007134992A1 PCT/EP2007/054597 EP2007054597W WO2007134992A1 WO 2007134992 A1 WO2007134992 A1 WO 2007134992A1 EP 2007054597 W EP2007054597 W EP 2007054597W WO 2007134992 A1 WO2007134992 A1 WO 2007134992A1
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WO
WIPO (PCT)
Prior art keywords
track
section
monitoring
transmitter
receiver
Prior art date
Application number
PCT/EP2007/054597
Other languages
German (de)
French (fr)
Inventor
Peer Bohlmann
Bernd Raschke
Ralf Schwarz
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2007134992A1 publication Critical patent/WO2007134992A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/18—Railway track circuits
    • B61L1/181—Details

Definitions

  • the invention relates to a device for detecting the occupancy or free status of a track section by means of a track comprising both rails of the track section track circuit, in which a transmitter feeds a transmission signal, which is supplied via the track circuit at least one receiver.
  • the basic principle of detection of the occupied or free state of the track section is that the transmitter generates a transmit signal which is transmitted through the track circuit, which represents the track ⁇ sections to the receiver, where ⁇ interprets the transmitted signal at the receiver.
  • a transmit signal is set at the transmitter in such a way that the receiver can recognize the signal generated by the transmitter.
  • the ballast resistance of the track has a considerable influence on the setting parameters and the maximum length of the track section.
  • the ⁇ ser can during operation in a very large area, for example by a factor of 100, to change.
  • the surveil ⁇ monitoring of larger track areas, that go beyond the maximum length is usually implemented through the concatenation of several track circuits, or by using other track monitoring means, for example, axle counters.
  • the presence of a rail vehicle in the track section is revealed by the receiver receiving no or a weaker signal from the transmitter for a defined time. Since ⁇ can be easily identified with the transmission signals from the receiver with a free track section, a high transmission voltage and there ⁇ desirable with a high transmission power. A nal to high Sendesig ⁇ but causes might recognize that the receiver signals even in the presence of a rail vehicle on the track section correct transmission ⁇ and the busy state of the main-track section would not detect.
  • the maximum length of the track section, in which reliable monitoring of Bele ⁇ tion state is possible, is therefore limited.
  • the invention has for its object to provide a device for detecting the busy or idle state of a Gleisabschnit ⁇ tes, which allows safe monitoring for longer track sections.
  • the object is achieved in that the track circuit between the rails connected in parallel
  • Consequential benefit consists in the reduction of expenses for route equipment, combined with an increase of the MTBF (Mean Time Between Failure) of the track area to be monitored .
  • the provision of spare components can be reduced.
  • the configuration is simplified and the total number of track circuits per project is reduced. The assembly and testing effort goes back.
  • the track sections can be better adapted to required Signalab ⁇ states, resulting in maintenance and cost advantages.
  • the capacitors are connected in the same distance as possible between ground and insulated rail of the track section to be monitored.
  • the inductance of the rail is compensated in a defined manner.
  • a monitoring device for monitoring electrical parameters of the track circuit is provided according to claim 3.
  • the monitoring may relate to transmitter and / or receiver parameters, with preferably secure computers, for example SIMIS TC from Siemens AG, being used.
  • SIMIS TC secure computers
  • the monitoring can be done very safely and continuously, so that sudden voltage / current changes in accordance with claim 6 effect a secure response over a threshold value to be set out, for ⁇
  • a threshold value to be set out
  • the monitored parameters relate according to claim 4 preferably voltage values and / or current values and / or power values and are ⁇ according to claim 5, preferably the receiver and / or the transmitter assigned.
  • the invention will be described in more detail with reference to figurative representations.
  • Figure 1 is a schematic representation of a series of track circuits of known type
  • Figure 2 track circuits of the claimed type in a similar representation as Figure 1.
  • FIG. 1 exemplarily illustrates four track current circuits Ia, Ib, Ic and Id, each of which consists of a centrally arranged transmitter 2 and two end receivers 3.
  • FIG. 2 Compared to this known type, according to FIG. 2, additional capacitors 4 are connected between a ground rail 5 and an insulated rail 6 of the track circuit 7a or 7b. It can be seen that only two track circuits 7a and 7b instead of four track circuits Ia, Ib, Ic and Id ( Figure 1) are required for the total length of Gleisbe ⁇ rich. This effect is due to the fact that the capacitance of the capacitors 4 quasi compensates the inductance of the rails 5 and 6, whereby the total resistance of the track section is reduced.
  • the transmitter 8 of the track circuits 7a and 7b can essentially correspond in their functionality to the transmitter 2 (FIG. 1). End-side receivers 9 are additionally equipped with monitoring devices for voltage monitoring.
  • the voltage is monitored by means of secure computer signal technology safe and continuous, thereby possible errors, such as cable tear on condensate ⁇ 4, can be revealed. Errors lead to a sudden increase of a signal level. Since a level signal is increased not generally exclude, in rewriting ⁇ a threshold value th, a safety response of the track ⁇ circuit 7a, 7b, in particular a busy signal or an error message to a signal box, triggers.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Abstract

The invention relates to a device for detecting the occupied or free status of a section of track, by means of a track current circuit (1a, 1b, 1c, 1d; 7a, 7b), including both rails of the section of track, into which a transmitter (2; 8) introduces a transmitted signal which is supplied to at least one receiver (3; 9) via the track current circuit (1a, 1b, 1c, 1d; 7a, 7b). According to the invention a longer section of track may be monitored wherein the track current circuit (7a, 7b) comprises capacitors (4) wired in parallel between the tracks.

Description

Beschreibungdescription
Vorrichtung zur Detektion des Belegt- oder Freizustandes eines GleisabschnittesDevice for detecting the occupancy or free status of a track section
Die Erfindung betrifft eine Vorrichtung zur Detektion des Belegt- oder Freizustandes eines Gleisabschnittes mittels eines beide Schienen des Gleisabschnittes umfassenden Gleisstromkreises, in den ein Sender ein Sendesignal einspeist, welches über den Gleisstromkreis mindestens einem Empfänger zugeführt ist .The invention relates to a device for detecting the occupancy or free status of a track section by means of a track comprising both rails of the track section track circuit, in which a transmitter feeds a transmission signal, which is supplied via the track circuit at least one receiver.
Das Grundprinzip der Detektion des Belegt- oder Freizustandes des Gleisabschnittes besteht darin, dass der Sender ein Sende- signal generiert, das über den Gleisstromkreis, der den Gleis¬ abschnitt repräsentiert, an den Empfänger übertragen wird, wo¬ bei der Empfänger das Sendesignal interpretiert. Bei Mitten¬ einspeisung sind in Grundstellung ungefähr in der Mitte des Gleisabschnittes der Sender und an den beiden Enden des Gleis- abschnittes Empfänger vorgesehen. In Abhängigkeit von der Länge des zu überwachenden Gleisabschnittes wird am Sender ein Sendesignal derart eingestellt, dass der Empfänger das vom Sender erzeugte Signal erkennen kann. Einen erheblichen Ein- fluss auf die Einstellparameter und die maximale Länge des Gleisabschnittes hat der Bettungswiderstand des Gleises. Die¬ ser kann sich während des Betriebes in einem sehr großen Bereich, beispielsweise um den Faktor 100, ändern. Die Überwa¬ chung von größeren Gleisbereichen, die über die Maximallängen hinausgehen, wird üblicherweise durch die Aneinanderreihung mehrerer Gleisstromkreise oder durch Verwendung anderer Gleisüberwachungseinrichtungen, beispielsweise Achszähler, realisiert . Das Vorhandensein eines Schienenfahrzeugs im Gleisabschnitt wird dadurch offenbart, dass der Empfänger für eine definierte Zeit kein oder ein schwächeres Signal vom Sender empfängt. Da¬ mit die Sendesignale vom Empfänger bei freiem Gleisabschnitt gut erkannt werden können, ist eine hohe Sendespannung und da¬ mit ein hoher Sendestrom wünschenswert. Ein zu hohes Sendesig¬ nal führt jedoch dazu, dass der Empfänger auch bei Vorhandensein eines Schienenfahrzeugs im Gleisabschnitt korrekte Sende¬ signale erkennen könnte und damit den Belegzustand des Gleis- abschnittes nicht detektieren würde. Die maximale Länge des Gleisabschnittes, bei dem eine sichere Überwachung des Bele¬ gungszustandes möglich ist, ist folglich begrenzt.The basic principle of detection of the occupied or free state of the track section is that the transmitter generates a transmit signal which is transmitted through the track circuit, which represents the track ¬ sections to the receiver, where ¬ interprets the transmitted signal at the receiver. When center ¬ feed are provided in the home position approximately in the middle of the track section of the transmitter and at the two ends of the track section receiver. Depending on the length of the track section to be monitored, a transmission signal is set at the transmitter in such a way that the receiver can recognize the signal generated by the transmitter. The ballast resistance of the track has a considerable influence on the setting parameters and the maximum length of the track section. The ¬ ser can during operation in a very large area, for example by a factor of 100, to change. The surveil ¬ monitoring of larger track areas, that go beyond the maximum length is usually implemented through the concatenation of several track circuits, or by using other track monitoring means, for example, axle counters. The presence of a rail vehicle in the track section is revealed by the receiver receiving no or a weaker signal from the transmitter for a defined time. Since ¬ can be easily identified with the transmission signals from the receiver with a free track section, a high transmission voltage and there ¬ desirable with a high transmission power. A nal to high Sendesig ¬ but causes might recognize that the receiver signals even in the presence of a rail vehicle on the track section correct transmission ¬ and the busy state of the main-track section would not detect. The maximum length of the track section, in which reliable monitoring of Bele ¬ tion state is possible, is therefore limited.
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zur Detektion des Belegt- oder Freizustandes eines Gleisabschnit¬ tes anzugeben, welche auch für längere Gleisabschnitte eine sichere Überwachung ermöglicht.The invention has for its object to provide a device for detecting the busy or idle state of a Gleisabschnit ¬ tes, which allows safe monitoring for longer track sections.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass der Gleisstromkreis zwischen den Schienen parallel geschalteteAccording to the invention the object is achieved in that the track circuit between the rails connected in parallel
Kondensatoren aufweist. Durch die Kondensatoren kann die Wirkung der Induktivität der Schiene annähernd kompensiert wer¬ den. Dadurch ergibt sich eine Änderung der elektrischen Eigenschaften des Gleisabschnittes, wobei der Gesamtwiderstand in- klusive des Bettungswiderstandes des Gleises verringert wird und somit Gleisstromkreislängen vergrößert werden können. Gegenüber der bekannten Lösung ohne Kondensatoren kann eine deutliche Vergrößerung der Maximallänge des mit einem Gleis¬ stromkreis überwachbaren Gleisabschnittes erreicht werden. Da- bei kann die prinzipielle Funktionsweise bezüglich Frei- und Belegtmeldung unverändert bestehen bleiben.Has capacitors. By the capacitors, the effect of the inductance of the rail can be approximately compensated who ¬ . This results in a change in the electrical properties of the track section, whereby the total resistance including the ballast resistance of the track is reduced and thus track circuit lengths can be increased. Compared to the known solution without capacitors, a significant increase in the maximum length of trackable with a track ¬ circuit track section can be achieved. In this case, the basic mode of operation with regard to free and busy message can remain unchanged.
Durch die Vergrößerung der Maximallängen ergeben sich Einsparungen bezüglich der Anzahl der benötigten Sender und Empfän- ger. Folgenutzen besteht in der Verringerung von Aufwänden für Streckengeräte, verbunden mit einer Erhöhung des MTBF (mean time between failure - mittlerer Ausfallabstand) des zu über¬ wachenden Streckenbereiches. Die Vorhaltung von Ersatzkompo- nenten kann reduziert werden. Die Projektierung wird vereinfacht und die Gesamtzahl der Gleisstromkreise pro Projekt wird reduziert. Der Montage- und Prüfaufwand geht zurück. Letztlich können die Gleisabschnitte besser an erforderliche Signalab¬ stände angepasst werden, wodurch sich Wartung- und Kostenvor- teile ergeben.Increasing the maximum lengths results in savings in terms of the number of transmitters and receivers required. ger. Consequential benefit consists in the reduction of expenses for route equipment, combined with an increase of the MTBF (Mean Time Between Failure) of the track area to be monitored . The provision of spare components can be reduced. The configuration is simplified and the total number of track circuits per project is reduced. The assembly and testing effort goes back. Ultimately, the track sections can be better adapted to required Signalab ¬ states, resulting in maintenance and cost advantages.
Gemäß Anspruch 2 sind die Kondensatoren in möglichst gleichem Abstand zueinander zwischen Erd- und isolierter Schiene des zu überwachenden Gleisabschnittes geschaltet. Durch diese Anord- nung wird die Induktivität der Schiene in definierter Weise kompensiert .In accordance with claim 2, the capacitors are connected in the same distance as possible between ground and insulated rail of the track section to be monitored. By this arrangement, the inductance of the rail is compensated in a defined manner.
Zur Gewährleistung der Sicherheit ist gemäß Anspruch 3 eine Überwachungseinrichtung zur Überwachung elektrischer Parameter des Gleisstromkreises vorgesehen. Die Überwachung kann sich auf Sender- und/oder Empfangsparameter beziehen, wobei vorzugsweise sichere Rechner, beispielsweise SIMIS TC der Siemens AG, verwendet werden. Die Überwachung kann dadurch sehr sicher und kontinuierlich erfolgen, so dass plötzliche Spannungs- /Strom-Änderungen gemäß Anspruch 6 über einen einzustellenden Schwellwert hinaus eine sichere Reaktion bewirken, zum Bei¬ spiel Belegtmeldung oder sichere Stör-/Fehlermeldung an ein Stellwerk. Anzunehmende Fehler, wie beispielsweise Seilabriss an Kondensatoren, können auf diese Weise aufgedeckt werden.To ensure safety, a monitoring device for monitoring electrical parameters of the track circuit is provided according to claim 3. The monitoring may relate to transmitter and / or receiver parameters, with preferably secure computers, for example SIMIS TC from Siemens AG, being used. The monitoring can be done very safely and continuously, so that sudden voltage / current changes in accordance with claim 6 effect a secure response over a threshold value to be set out, for ¬ When playing busy message or safe fault / error message to a switchboard. Assumed errors, such as cable rupture on capacitors, can be revealed in this way.
Die überwachten Parameter betreffen gemäß Anspruch 4 vorzugsweise Spannungswerte und/oder Stromwerte und/oder Leistungs¬ werte und sind gemäß Anspruch 5 vorzugsweise dem Empfänger und/oder dem Sender zugeordnet. Nachfolgend wird die Erfindung anhand figürlicher Darstellungen näher beschrieben.The monitored parameters relate according to claim 4 preferably voltage values and / or current values and / or power values and are ¬ according to claim 5, preferably the receiver and / or the transmitter assigned. The invention will be described in more detail with reference to figurative representations.
Es zeigen:Show it:
Figur 1 eine Prinzipdarstellung aneinander gereihter Gleisstromkreise bekannter Bauart undFigure 1 is a schematic representation of a series of track circuits of known type and
Figur 2 Gleisstromkreise der beanspruchten Bauart in gleichartiger Darstellung wie Figur 1.Figure 2 track circuits of the claimed type in a similar representation as Figure 1.
Zur lückenlosen Überwachung eines Gleisbereiches werden Gleisstromkreise Ia, Ib, Ic, Id üblicherweise direkt aneinanderge¬ reiht. Figur 1 veranschaulicht beispielhaft vier Gleisstrom¬ kreise Ia, Ib, Ic und Id, die jeweils aus einem mittig ange- ordneten Sender 2 und zwei endseitigen Empfängern 3 bestehen.For continuous monitoring of a track portion of track circuits Ia, Ib, Ic, Id are usually lined up directly aneinanderge ¬. FIG. 1 exemplarily illustrates four track current circuits Ia, Ib, Ic and Id, each of which consists of a centrally arranged transmitter 2 and two end receivers 3.
Gegenüber dieser bekannten Bauart sind gemäß Figur 2 zusätzlich Kondensatoren 4 zwischen einer Erdschiene 5 und einer isolierten Schiene 6 des Gleisstromkreises 7a bzw. 7b geschal- tet . Es ist ersichtlich, dass für die Gesamtlänge des Gleisbe¬ reiches nur noch zwei Gleisstromkreise 7a und 7b anstelle von vier Gleisstromkreisen Ia, Ib, Ic und Id (Figur 1) erforderlich sind. Dieser Effekt ist darauf zurückzuführen, dass die Kapazität der Kondensatoren 4 die Induktivität der Schienen 5 und 6 quasi kompensiert, wodurch sich der Gesamtwiderstand des Gleisabschnittes verringert. Der Sender 8 der Gleisstromkreise 7a und 7b kann in seiner Funktionalität im Wesentlichen dem Sender 2 (Figur 1) entsprechen. Endseitige Empfänger 9 sind zusätzlich mit Überwachungseinrichtungen zur Spannungsüberwa- chung ausgestattet. Die Spannung wird dabei mittels sicherer Rechner signaltechnisch sicher und kontinuierlich überwacht, wodurch mögliche Fehler, beispielsweise Seilabriss an Konden¬ satoren 4, aufgedeckt werden können. Fehler führen zu sprunghaftem Anstieg eines Signalpegels. Da auch ein Pegelsignalan- stieg nicht generell auszuschließen ist, wird bei Überschrei¬ ten eines Schwellwertes eine Sicherheitsreaktion des Gleis¬ stromkreises 7a, 7b, insbesondere eine Belegtmeldung oder eine Fehlermeldung an ein Stellwerk, auslöst. Compared to this known type, according to FIG. 2, additional capacitors 4 are connected between a ground rail 5 and an insulated rail 6 of the track circuit 7a or 7b. It can be seen that only two track circuits 7a and 7b instead of four track circuits Ia, Ib, Ic and Id (Figure 1) are required for the total length of Gleisbe ¬ rich. This effect is due to the fact that the capacitance of the capacitors 4 quasi compensates the inductance of the rails 5 and 6, whereby the total resistance of the track section is reduced. The transmitter 8 of the track circuits 7a and 7b can essentially correspond in their functionality to the transmitter 2 (FIG. 1). End-side receivers 9 are additionally equipped with monitoring devices for voltage monitoring. The voltage is monitored by means of secure computer signal technology safe and continuous, thereby possible errors, such as cable tear on condensate ¬ 4, can be revealed. Errors lead to a sudden increase of a signal level. Since a level signal is increased not generally exclude, in rewriting ¬ a threshold value th, a safety response of the track ¬ circuit 7a, 7b, in particular a busy signal or an error message to a signal box, triggers.

Claims

Patentansprüche claims
1. Vorrichtung zur Detektion des Belegt- oder Freizustandes eines Gleisabschnittes mittels eines beide Schienen des Gleisabschnittes umfassenden Gleisstromkreises (Ia, Ib, Ic, Id; 7a, 7b), in den ein Sender (2; 8) ein Sendesignal einspeist, welches über den Gleisstromkreis (Ia, Ib, Ic, Id; 7a, 7b) mindestens einem Empfänger (3; 9) zugeführt ist, dadurch gekennzeichnet, dass der Gleisstromkreis (7a, 7b) zwischen den Schienen pa¬ rallel geschaltete Kondensatoren (4) aufweist.1. A device for detecting the busy or free state of a track section by means of a track comprising both rails of the track section track circuit (Ia, Ib, Ic, Id, 7a, 7b), in which a transmitter (2, 8) feeds a transmission signal, which via the Track circuit (Ia, Ib, Ic, Id; 7a, 7b) is supplied to at least one receiver (3; 9), characterized in that the track circuit (7a, 7b) between the rails pa ¬ parallel connected capacitors (4).
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Kondensatoren (4) im Wesentlichen äquidistant angeordnet sind.2. Device according to claim 1, characterized in that the capacitors (4) are arranged substantially equidistantly.
3. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass eine Überwachungseinrichtung zur Überwachung elektrischer Parameter des Gleisstromkreises (7a, 7b) vorgesehen ist .3. Device according to one of the preceding claims, characterized in that a monitoring device for monitoring electrical parameters of the track circuit (7a, 7b) is provided.
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Überwachungseinrichtung zur Signalüberwachung ausgebildet ist.4. Apparatus according to claim 3, characterized in that the monitoring device is designed for signal monitoring.
5. Vorrichtung nach einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, dass die Überwachungseinrichtung dem Empfänger (9) und/oder dem Sender (8) zugeordnet ist. 5. Device according to one of claims 3 or 4, characterized in that the monitoring device is associated with the receiver (9) and / or the transmitter (8).
6. Vorrichtung nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, dass die Überwachungseinrichtung eine Schwellwertkomponente aufweist, welche eine Einrichtung zur Belegtmeldung und/oder Fehlermeldung des Gleisabschnittes beaufschlagt. 6. Device according to one of claims 3 to 5, characterized in that the monitoring device has a threshold component which acts on a device for occupancy and / or error message of the track section.
PCT/EP2007/054597 2006-05-19 2007-05-11 Device for detecting the occupied or free status of a section of track WO2007134992A1 (en)

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DE200610024691 DE102006024691A1 (en) 2006-05-19 2006-05-19 Device for detecting the occupancy or leisure state of a track section
DE102006024691.8 2006-05-19

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2524852A1 (en) * 2011-05-17 2012-11-21 Schweizerische Bundesbahnen SBB Method and device for monitoring a section of a rail
WO2013027195A1 (en) * 2011-08-25 2013-02-28 Societe Nationale Des Chemins De Fer Francais Sncf System for the detection of a shunt on a railway track
US10647338B2 (en) 2016-04-06 2020-05-12 Alstom Transport Technologies Method, controller and system for determining the location of a train on a track or of a broken rail of a track

Citations (4)

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Publication number Priority date Publication date Assignee Title
US3636344A (en) * 1969-12-15 1972-01-18 Westinghouse Air Brake Co Long length track circuit
FR2138201A1 (en) * 1971-05-19 1973-01-05 Signaux Entr Electriques
DE4413183A1 (en) * 1994-04-12 1995-10-19 Siemens Ag Railway line sections train traffic control system
EP0771711A2 (en) * 1995-10-27 1997-05-07 Sasib Railway S.p.A. Audiofrequency track circuit with data transmission (digital TC) transceiver interface

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2568209B1 (en) * 1984-07-27 1988-07-08 Signaux Entr Electriques PERFECTED TRACK CIRCUIT FOR ALTERNATIVE CURRENT ELECTRIC RAILWAYS

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3636344A (en) * 1969-12-15 1972-01-18 Westinghouse Air Brake Co Long length track circuit
FR2138201A1 (en) * 1971-05-19 1973-01-05 Signaux Entr Electriques
DE4413183A1 (en) * 1994-04-12 1995-10-19 Siemens Ag Railway line sections train traffic control system
EP0771711A2 (en) * 1995-10-27 1997-05-07 Sasib Railway S.p.A. Audiofrequency track circuit with data transmission (digital TC) transceiver interface

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2524852A1 (en) * 2011-05-17 2012-11-21 Schweizerische Bundesbahnen SBB Method and device for monitoring a section of a rail
WO2013027195A1 (en) * 2011-08-25 2013-02-28 Societe Nationale Des Chemins De Fer Francais Sncf System for the detection of a shunt on a railway track
FR2979318A1 (en) * 2011-08-25 2013-03-01 Sncf SYSTEM FOR DETECTING A SHUNT ON A RAILWAY ROUTE
US10647338B2 (en) 2016-04-06 2020-05-12 Alstom Transport Technologies Method, controller and system for determining the location of a train on a track or of a broken rail of a track

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