EP1867546A1 - Method and assembly for securing a train travelling along a railway track - Google Patents

Method and assembly for securing a train travelling along a railway track Download PDF

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Publication number
EP1867546A1
EP1867546A1 EP06115608A EP06115608A EP1867546A1 EP 1867546 A1 EP1867546 A1 EP 1867546A1 EP 06115608 A EP06115608 A EP 06115608A EP 06115608 A EP06115608 A EP 06115608A EP 1867546 A1 EP1867546 A1 EP 1867546A1
Authority
EP
European Patent Office
Prior art keywords
train
railway signal
railway
radio contact
braking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06115608A
Other languages
German (de)
French (fr)
Inventor
Colin Evert Michael Knaake
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vialis NMA Railway Signalling BV
Original Assignee
Vialis NMA Railway Signalling BV
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 Vialis NMA Railway Signalling BV filed Critical Vialis NMA Railway Signalling BV
Priority to EP06115608A priority Critical patent/EP1867546A1/en
Publication of EP1867546A1 publication Critical patent/EP1867546A1/en
Withdrawn legal-status Critical Current

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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
    • B61L3/125—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 short-range radio transmission

Definitions

  • the invention firstly relates to a method for securing a train travelling along a railway track provided with railway signs.
  • a method for securing a train travelling along a railway track provided with railway signs comprising the steps of establishing a radio contact between the train and a specific railway signal which the train is approaching; transmitting a mode of the railway signal to the train by means of said radio contact; when the mode of the railway signal requires a braking of the train, determining whether such a braking is initiated by the driver of the train; and when, in such a case, no braking is initiated by the train driver, initiating an automated braking of the train.
  • a method which also functions very well at low train velocities, specifically at train velocities under 40 km/h.
  • inventive method basically may be used at the entire practical velocity range of the train, if desired.
  • the step of establishing a radio contact between the train and the railway signal is initiated by a beacon positioned alongside the railway track at a predetermined distance ahead of the railway signal.
  • a beacon could be positioned at a distance of 200 meters from the specific railway signal (in case of a method meant for use at low train velocities as stated above).
  • a receiver in the train receives a signal from the beacon, as a result of which appropiate means aboard of the train start establishing the radio contact with the specific railway signal.
  • the beacon sends information to the train based upon which the radio contact with the specific railway signal is established.
  • the train establishes the radio contact with the the appropiate railway signal, and not with another railway signal (for example when there are a number of railway tracks extending alongside each other each being provided with their own railway signals).
  • the radio contact may have a limited range, such that there is no risk that a radio contact is established with another railway signal alongside the same railway track.
  • the information specifies the railway signal by means of a property of the radio contact, such as a frequency at which a contact with the specific railway signal can be established.
  • a property of the radio contact such as a frequency at which a contact with the specific railway signal can be established.
  • the beacon informs appropiate means within the train (such as, for example, a radio modem) about the frequency at which a radio contact with the specific railway signal can be established.
  • the safe functioning of the method may be improved further when along with the mode also an identification of the specific railway signal is transmitted to the train. As a result the establishment of a radio contact with a wrong railway signal can be prevented even better.
  • the automated braking of the train is stopped when, after initiation of such an automated braking, the mode of the railway signal changes to a mode not requiring a braking of the train. Then the train driver again gains control over the train (and, if desired, may initiate an acceleration of the train again).
  • the radio contact between the train and the railway signal is stopped when the train reaches a predetermined position relative to the railway signal. It should be noted, that preferably the radio contact, after being established, is maintained when the mode of the railway signal requires a braking of the train, and that the mode of the railway signal is thereafter monitored continuously by the train. Such monitoring, however, is no longer required and useless when the train has reached a certain position (generally close to the specific railway signal). When at the establishment of the first radio contact the mode of the railway signal does not require the braking of the train, the radio contact may be stopped immediately.
  • the radio contact is stopped by a beacon positioned at said predetermined position, such as a beacon positioned at a short distance ahead of the railway signal (in the above referenced low speed situation for example a few meters ahead of the railway signal).
  • the radio contact comprises a coded radio contact.
  • the present invention relates to an assembly for securing a train travelling along a railway track provided with railway signs, comprising means for establishing a radio contact between the train and a specific railway signal which the train is approaching and for transmitting a mode of the railway signal to the train; means for determining whether a braking of the train is initiated by the driver of the train when the mode of the railway signal requires such a braking of the train; and means for initiating an automated braking of the train when, in such a case, no braking is initiated by the train driver.
  • the assembly further comprises a beacon positioned alongside the railway track at a predetermined distance ahead of the railway signal for initiating the establishment of the radio contact between the train and the railway signal.
  • the beacon is devised for sending information to the train based upon which the radio contact with the specific railway signal is established.
  • the risk of establishing a radio contact with a different railway signal can be reduced in this manner.
  • further means are provided for stopping the radio contact between the train and the railway signal when the train reaches a predetermined position relative to the railway signal, such as, for example, a beacon positioned at a predetermined position.
  • the beacon is positioned at a short distance ahead of the railway signal.
  • a section 1 of a railway track is represented.
  • this figure shows a railway sign 2 positioned alongside the railway track.
  • the railway sign 2 is a sign comprising signalling lights with different colours (e.g. red, yellow and green).
  • the railway sign by means of its signalling lights informs the driver of an arriving train 3 about the status of railway track sections ahead of the present railway track section 1 (for example whether or not a preceeding train is present in said railway track sections). Based upon said information the driver will take an appropiate action (for example slowing down or completely stopping the train).
  • the present invention provides a method and assembly for ensuring that the appropriate action of the train (e.g. slowing down or stopping) will occur automatically also when the driver of the train does not respond correctly to the railway sign.
  • the appropriate action of the train e.g. slowing down or stopping
  • a first beacon 4 is positioned alongside the railway track section 1 at a predetermined distance (e.g. 200 meters) ahead of the railway sign 2.
  • a radiomodem (not illustrated in detail) aboard the train about a scanning frequency for establishing a radio contact between said radiomodem and the railway sign 2.
  • the radiomodem contacts the railway sign 2 which, in turn, will transmit information about its mode (red light, yellow light or green light) to the train.
  • the railway sign 2 also transmits an identification of itself to the train, such that the radiomodem knows that it communicates with the correct railway sign.
  • the information received by the train 3 indicates that the railway sign has red light, and it is determined (by appropriate means not shown in detail) that the driver does not react correspondingly by slowing down/stopping the train, an automated slowing down of the train 3 will be initiated by appropriate control means (not illustrated). The driver then cannot control the train himself.
  • the radiomodem While the train keeps on moving during slowing down, the radiomodem maintains its radio contact with the railway sign 2 and keeps on scanning the mode thereof. If the mode changes (for example to green light) an appropriate respons in the train will follow (for example the slowing down will end and the driver again gains control over the train 3). The radio contact can be ended then. When the mode does not change, the operation of the radiomodem also will continue.
  • a second beacon 5 is positioned in the vicinity of the railway sign 2, for example 6 meters ahead of it. When the train passes this second beacon 5, latter will contact the radiomodem aboard the train 3 and will stop the operation thereof.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Abstract

A method for securing a train travelling along a railway track provided with railway signs, comprises the steps of establishing a radio contact between the train and a specific railway signal which the train is approaching; transmitting a mode of the railway signal to the train by means of said radio contact; when the mode of the railway signal requires a braking of the train, determining whether such a braking is initiated by the driver of the train; and when, in such a case, no braking is initiated by the train driver, initiating an automated braking of the train. Also an assembly for carrying out said method is provided.

Description

  • The invention firstly relates to a method for securing a train travelling along a railway track provided with railway signs.
  • For enhancing the safety of railway transport system it is important to incorporate methods defining a safety-backup for the drivers of trains. One of the goals of such methods is to achieve an automated braking of the train when the train is approaching a railway signal indicating that the train should stop or slow down, but the driver of the train does not act correspondingly (for whatever reason). In one such known method information about the mode of the railway signals is injected into the rails of the railway track in the form of control currents and transmitted to the train by means of a magnetic coupling. In the train this information is translated into control signals for influencing the velocity of the train in an automated manner. However, currently the safe function of such a known method is only guaranteed at train velocities above 40 km/h.
  • Therefore it is an object of the present invention to provide an improved method of the type referenced to above.
  • Thus, in accordance with a first aspect of the present invention a method is provided for securing a train travelling along a railway track provided with railway signs, comprising the steps of establishing a radio contact between the train and a specific railway signal which the train is approaching; transmitting a mode of the railway signal to the train by means of said radio contact; when the mode of the railway signal requires a braking of the train, determining whether such a braking is initiated by the driver of the train; and when, in such a case, no braking is initiated by the train driver, initiating an automated braking of the train.
  • According to the present invention a method is provided which also functions very well at low train velocities, specifically at train velocities under 40 km/h. However, it should be noted that the inventive method basically may be used at the entire practical velocity range of the train, if desired.
  • In a preferred embodiment of the method according to the invention, the step of establishing a radio contact between the train and the railway signal, is initiated by a beacon positioned alongside the railway track at a predetermined distance ahead of the railway signal. For example, such a beacon could be positioned at a distance of 200 meters from the specific railway signal (in case of a method meant for use at low train velocities as stated above). A receiver in the train receives a signal from the beacon, as a result of which appropiate means aboard of the train start establishing the radio contact with the specific railway signal.
  • In such a case it is preferred, that the beacon sends information to the train based upon which the radio contact with the specific railway signal is established. As a result it is guaranteed that the train establishes the radio contact with the the appropiate railway signal, and not with another railway signal (for example when there are a number of railway tracks extending alongside each other each being provided with their own railway signals).
  • It is noted that the radio contact may have a limited range, such that there is no risk that a radio contact is established with another railway signal alongside the same railway track.
  • For example, the information specifies the railway signal by means of a property of the radio contact, such as a frequency at which a contact with the specific railway signal can be established. This means that the beacon informs appropiate means within the train (such as, for example, a radio modem) about the frequency at which a radio contact with the specific railway signal can be established.
  • In a preferred embodiment of the method according to the present invention only a mode allowing the train to maintain its velocity is transmitted to the train. This creates a safe system, because in case of failure of the method (for example no radio contact) the automated braking is initiated.
  • The safe functioning of the method may be improved further when along with the mode also an identification of the specific railway signal is transmitted to the train. As a result the establishment of a radio contact with a wrong railway signal can be prevented even better.
  • In yet another embodiment the automated braking of the train is stopped when, after initiation of such an automated braking, the mode of the railway signal changes to a mode not requiring a braking of the train. Then the train driver again gains control over the train (and, if desired, may initiate an acceleration of the train again).
  • Further, it is preferred that the radio contact between the train and the railway signal is stopped when the train reaches a predetermined position relative to the railway signal. It should be noted, that preferably the radio contact, after being established, is maintained when the mode of the railway signal requires a braking of the train, and that the mode of the railway signal is thereafter monitored continuously by the train. Such monitoring, however, is no longer required and useless when the train has reached a certain position (generally close to the specific railway signal). When at the establishment of the first radio contact the mode of the railway signal does not require the braking of the train, the radio contact may be stopped immediately.
  • For example, the radio contact is stopped by a beacon positioned at said predetermined position, such as a beacon positioned at a short distance ahead of the railway signal (in the above referenced low speed situation for example a few meters ahead of the railway signal).
  • For further safe-guarding the method, it is possible that the radio contact comprises a coded radio contact.
  • In a second aspect the present invention relates to an assembly for securing a train travelling along a railway track provided with railway signs, comprising means for establishing a radio contact between the train and a specific railway signal which the train is approaching and for transmitting a mode of the railway signal to the train; means for determining whether a braking of the train is initiated by the driver of the train when the mode of the railway signal requires such a braking of the train; and means for initiating an automated braking of the train when, in such a case, no braking is initiated by the train driver.
  • Preferably the assembly further comprises a beacon positioned alongside the railway track at a predetermined distance ahead of the railway signal for initiating the establishment of the radio contact between the train and the railway signal.
  • In such a case it is preferred that the beacon is devised for sending information to the train based upon which the radio contact with the specific railway signal is established. The risk of establishing a radio contact with a different railway signal can be reduced in this manner.
  • In yet another embodiment of the assembly according to the present invention, further means are provided for stopping the radio contact between the train and the railway signal when the train reaches a predetermined position relative to the railway signal, such as, for example, a beacon positioned at a predetermined position.
  • Preferably, in such a case, the beacon is positioned at a short distance ahead of the railway signal.
  • Hereinafter the invention will be further elucidated while referring to the figure which shows a schematic representation of part of a railway system provided with an embodiment of the assembly in accordance with the present invention.
  • In the figure a section 1 of a railway track is represented. Further, this figure shows a railway sign 2 positioned alongside the railway track. For example, in the illustrated embodiment the railway sign 2 is a sign comprising signalling lights with different colours (e.g. red, yellow and green). The railway sign by means of its signalling lights informs the driver of an arriving train 3 about the status of railway track sections ahead of the present railway track section 1 (for example whether or not a preceeding train is present in said railway track sections). Based upon said information the driver will take an appropiate action (for example slowing down or completely stopping the train).
  • The present invention provides a method and assembly for ensuring that the appropriate action of the train (e.g. slowing down or stopping) will occur automatically also when the driver of the train does not respond correctly to the railway sign.
  • A first beacon 4 is positioned alongside the railway track section 1 at a predetermined distance (e.g. 200 meters) ahead of the railway sign 2. When the train 3 passes this beacon 4, latter informs a radiomodem (not illustrated in detail) aboard the train about a scanning frequency for establishing a radio contact between said radiomodem and the railway sign 2. Based upon this information the radiomodem contacts the railway sign 2 which, in turn, will transmit information about its mode (red light, yellow light or green light) to the train. Preferably, the railway sign 2 also transmits an identification of itself to the train, such that the radiomodem knows that it communicates with the correct railway sign.
  • It should be noted that the information about the mode of the railway sign also could be translated into transmitting/not transmitting by the railway sign 2.
  • When, for example, the information received by the train 3 indicates that the railway sign has red light, and it is determined (by appropriate means not shown in detail) that the driver does not react correspondingly by slowing down/stopping the train, an automated slowing down of the train 3 will be initiated by appropriate control means (not illustrated). The driver then cannot control the train himself.
  • While the train keeps on moving during slowing down, the radiomodem maintains its radio contact with the railway sign 2 and keeps on scanning the mode thereof. If the mode changes (for example to green light) an appropriate respons in the train will follow (for example the slowing down will end and the driver again gains control over the train 3). The radio contact can be ended then. When the mode does not change, the operation of the radiomodem also will continue.
  • A second beacon 5 is positioned in the vicinity of the railway sign 2, for example 6 meters ahead of it. When the train passes this second beacon 5, latter will contact the radiomodem aboard the train 3 and will stop the operation thereof.
  • The invention is not limited to the embodiment described above which may be varied widely within the scope of the invention as defined by the appending claims.

Claims (18)

  1. Method for securing a train travelling along a railway track provided with railway signs, characterised by the steps of:
    - establishing a radio contact between the train and a specific railway signal which the train is approaching;
    - transmitting a mode of the railway signal to the train by means of said radio contact;
    - when the mode of the railway signal requires a braking of the train, determining whether such a braking is initiated by the driver of the train; and
    - when, in such a case, no braking is initiated by the train driver, initiating an automated braking of the train.
  2. Method according to claim 1, wherein the step of establishing a radio contact between the train and the railway signal, is initiated by a beacon positioned alongside the railway track at a predetermined distance ahead of the railway signal.
  3. Method according to claim 2, wherein the beacon sends information to the train based upon which the radio contact with the specific railway signal is established.
  4. Method according to claim 3, wherein the information specifies the railway signal by means of a property of the radio contact.
  5. Method according to claim 4, wherein the property of the radio contact is a frequency at which a contact with the specific railway signal can be established.
  6. Method according to any of the previous claims, wherein only a mode allowing the train to maintain its velocity is transmitted to the train.
  7. Method according to any of the previous claims, wherein along with the mode also an identification of the specific railway signal is transmitted to the train.
  8. Method according to any of the previous claims, wherein the automated braking of the train is stopped when, after initiation of such an automated braking, the mode of the railway signal changes to a mode not requiring a braking of the train.
  9. Method according to any of the previous claims, wherein the radio contact between the train and the railway signal is stopped when the train reaches a predetermined position relative to the railway signal.
  10. Method according to claim 9, wherein the radio contact is stopped by a beacon positioned at said predetermined position.
  11. Method according to claim 10, wherein the beacon is positioned at a short distance ahead of the railway signal.
  12. Method according to any of the previous claims, wherein the radio contact comprises a coded radio contact.
  13. Assembly for securing a train travelling along a railway track provided with railway signs, characterised by:
    - means for establishing a radio contact between the train and a specific railway signal which the train is approaching and for transmitting a mode of the railway signal to the train;
    - means for determining whether a braking of the train is initiated by the driver of the train when the mode of the railway signal requires such a braking of the train; and
    - means for initiating an automated braking of the train when, in such a case, no braking is initiated by the train driver.
  14. Assembly according to claim 13, further comprising a beacon positioned alongside the railway track at a predetermined distance ahead of the railway signal for initiating the establishment of the radio contact between the train and the railway signal.
  15. Assembly according to claim 14, wherein the beacon is devised for sending information to the train based upon which the radio contact with the specific railway signal is established.
  16. Assembly according to any of the claims 13-15, further comprising means for stopping the radio contact between the train and the railway signal when the train reaches a predetermined position relative to the railway signal.
  17. Assembly according to claim 16, wherein said means comprise a beacon positioned at a predetermined position.
  18. Method according to claim 17, wherein the beacon is positioned at a short distance ahead of the railway signal.
EP06115608A 2006-06-16 2006-06-16 Method and assembly for securing a train travelling along a railway track Withdrawn EP1867546A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06115608A EP1867546A1 (en) 2006-06-16 2006-06-16 Method and assembly for securing a train travelling along a railway track

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06115608A EP1867546A1 (en) 2006-06-16 2006-06-16 Method and assembly for securing a train travelling along a railway track

Publications (1)

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EP1867546A1 true EP1867546A1 (en) 2007-12-19

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EP06115608A Withdrawn EP1867546A1 (en) 2006-06-16 2006-06-16 Method and assembly for securing a train travelling along a railway track

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2420983A1 (en) * 2010-08-17 2012-02-22 Iveco France S.A. Control system and method for passenger transport vehicles, and passenger transport vehicle configured for the use of such a system and/or of such a method
CN107953902A (en) * 2017-11-30 2018-04-24 交控科技股份有限公司 A kind of method of train position correction
CN114802359A (en) * 2021-01-27 2022-07-29 株洲中车时代电气股份有限公司 Automatic benchmarking parking method, system and device for locomotive

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1352873A (en) * 1971-03-25 1974-05-15 British Railways Board Railway signalling systems
DE2428130A1 (en) * 1973-06-29 1975-01-09 Ericsson Telefon Ab L M Railway speed regulator for requisite stopping distance - with braking instruction modifiable to one to hold train at later stopping place
US20040102877A1 (en) * 2002-11-21 2004-05-27 Kane Mark Edward Positive signal comparator and method
EP1591335A1 (en) * 2004-04-30 2005-11-02 Alcatel Process for determining the distance between a beacon and a distant warning signal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1352873A (en) * 1971-03-25 1974-05-15 British Railways Board Railway signalling systems
DE2428130A1 (en) * 1973-06-29 1975-01-09 Ericsson Telefon Ab L M Railway speed regulator for requisite stopping distance - with braking instruction modifiable to one to hold train at later stopping place
US20040102877A1 (en) * 2002-11-21 2004-05-27 Kane Mark Edward Positive signal comparator and method
EP1591335A1 (en) * 2004-04-30 2005-11-02 Alcatel Process for determining the distance between a beacon and a distant warning signal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2420983A1 (en) * 2010-08-17 2012-02-22 Iveco France S.A. Control system and method for passenger transport vehicles, and passenger transport vehicle configured for the use of such a system and/or of such a method
CN107953902A (en) * 2017-11-30 2018-04-24 交控科技股份有限公司 A kind of method of train position correction
CN114802359A (en) * 2021-01-27 2022-07-29 株洲中车时代电气股份有限公司 Automatic benchmarking parking method, system and device for locomotive

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