EP3461715A1 - Bordvorrichtung für ein schienenfahrzeug - Google Patents

Bordvorrichtung für ein schienenfahrzeug Download PDF

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Publication number
EP3461715A1
EP3461715A1 EP17194052.1A EP17194052A EP3461715A1 EP 3461715 A1 EP3461715 A1 EP 3461715A1 EP 17194052 A EP17194052 A EP 17194052A EP 3461715 A1 EP3461715 A1 EP 3461715A1
Authority
EP
European Patent Office
Prior art keywords
rail vehicle
balise
information
information provided
time via
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17194052.1A
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English (en)
French (fr)
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EP3461715B1 (de
Inventor
Bhabani NAYAK
Karsten Rahn
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.)
Siemens Mobility GmbH
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Siemens Mobility GmbH
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Filing date
Publication date
Application filed by Siemens Mobility GmbH filed Critical Siemens Mobility GmbH
Priority to HUE17194052A priority Critical patent/HUE056125T2/hu
Priority to EP17194052.1A priority patent/EP3461715B1/de
Publication of EP3461715A1 publication Critical patent/EP3461715A1/de
Application granted granted Critical
Publication of EP3461715B1 publication Critical patent/EP3461715B1/de
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/025—Absolute localisation, e.g. providing geodetic coordinates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
    • B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
    • B61L3/08—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically
    • B61L3/12—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves
    • B61L3/121—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves using magnetic induction
    • B61L2003/123—French standard for inductive train protection, called "Contrôle de vitesse par balises" [KVB]

Definitions

  • the invention relates to an on-board antenna and to a method operating this on-board antenna.
  • the on-board antenna is part of a rail vehicle and may in particular interact with a balise.
  • a balise is known to be an electronic beacon or transponder placed between the rails of a railway as part of an automatic train protection (ATP) system (see, e.g., en.wikipedia.org/wiki/Balise).
  • ATP automatic train protection
  • Balises constitute an integral part of the European Train Control System (ETCS), where they serve as "beacons” giving the exact location of a train.
  • ETCS European Train Control System
  • an on-board antenna for a rail vehicle has a telepowering loop to activate a balise and another receiver loop for receiving the uplink signal supplied by the balise.
  • the on-board antenna has an omnidirectional pattern and receives signals from various angles.
  • a detection of a balise is currently subject to some uncertainty with regard to the actual position of the balise.
  • a detection of a balise position at a high accuracy is a general motivation to enable applications like supervision of platform screen doors or station stopping of a rail vehicle.
  • cross-talk has a strong impact on detecting the position of a balise.
  • Such cross-talk may stem from signals that are radiated from other balises of the same track and/or from balises of neighboring tracks.
  • telepowering may activate balises on the same track or on adjacent tracks. These activated balises emit signals that may interfere with the signal that should be detected by the rail vehicle. These unwanted signals are referred to as cross-talk.
  • the rail vehicle may determine a wrong position, because it receives a signal from a wrong balise (i.e. a balise that is not being passed over by the rail vehicle).
  • the objective is thus to overcome the disadvantages stated above and in particular to provide a solution that allows improving an on-board detection system of a rail vehicle for detecting balises.
  • an on-board antenna for a rail vehicle comprising
  • the on-board antenna may comprise a control unit to feed the antenna to enable beamforming.
  • the at least two beams are directed towards a rail track, in particular towards balises that are located at, in or adjacent to the track.
  • the at least two beams point towards the track at a different angle. That allows detecting a signal (information) from a balise at a different time for each of the at least two beams.
  • angles may vary between +45° and -45° with a minimum separation amounting to, e.g., 25° between any two beams.
  • At least two of the antenna elements are arranged in doublets.
  • the at least two beams comprise
  • the at least two beams comprise a third beam, which is directed at an angle of 90° towards the track.
  • a rail vehicle comprising a processing unit that is arranged to control the on-board antenna as described herein.
  • the at least two beams comprise a first beam and a second beam.
  • the processing unit is arranged
  • the position of the balise can be verified and thus the position of the rail vehicle can be determined based on the verified position of the balise.
  • the second time is later than the first time.
  • the train receives the ID of the balise several times in short succession (within a time frame) and hence knows that it is crossing the balise.
  • This allows verifying this particular balise by the ID (because of the several receptions of the ID by the several beams) and it allows determining the position of the train, because the train is (was) at the position of this particular balise, which is globally known (e.g., it is known that the balise ID is mounted at the coordinates xy in the track).
  • the information supplied by the balise may in particular comprise the position of the balise or a database that is accessible to the train supplies the location of the respective balise.
  • the solution presented allows to efficiently determine the position of the rail vehicle, e.g., train. Also, the direction of movement of the rail vehicle can be determined.
  • the processing unit is arranged to determine the presence of the balise based on the information provided at the first time via the first beam and the information provided at the second time via the second beam.
  • the processing unit is arranged to determine a direction of movement of the rail vehicle based on the succession of the information provided at the first time via the first beam and the information provided at the second time via the second beam.
  • the processing unit is arranged to determine and cancel cross-talk based on the succession of the information provided at the first time via the first beam and the information provided at the second time via the second beam.
  • the processing unit is arranged to determine a velocity of the rail vehicle based on the information provided at the first time via the first beam and the information provided at the second time via the second beam.
  • a method for monitoring a rail vehicle comprising a processing unit that is arranged to control the on-board antenna as described herein, wherein the at least two beams comprise a first beam and a second beam, the method comprising:
  • the method further comprises
  • the method further comprises
  • the method further comprises
  • the method further comprises
  • processing unit can comprise at least one, in particular several means that are arranged to execute the steps of the method described herein.
  • the means may be logically or physically separated; in particular several logically separate means could be combined in at least one physical unit.
  • Said processing unit may comprise at least one of the following: a processor, a microcontroller, a hard-wired circuit, an ASIC, an FPGA, a logic device.
  • the solution provided herein further comprises a computer program product directly loadable into a memory of a digital computer, comprising software code portions for performing the steps of the method as described herein.
  • a computer-readable medium e.g., storage of any kind, having computer-executable instructions adapted to cause a computer system to perform the method as described herein.
  • Examples described herein are in particular directed to an antenna array (e.g., doublets) that allow forming a beam pattern with specific angles. These beam patterns can be used to find the direction of arrival of received signals. This can be done by a solution described in [ Rias Muhamed: "Direction of Arrival Estimation using Antenna Arrays", Thesis submitted to the Faculty of the Virginia Polytechnic Institute and State University, January 1996, available at https://theses.lib.vt.edu/theses/available/etd-10022008-063154/unrestricted/LD5655.V855_1996.M843.pdf )], which is hereinafter referred to as [1].
  • the balise can be detected with an increased accuracy. Also, cross-talk of other balises can be identified and ignored.
  • Fig.1 visualizes how beam forming is utilized via several antenna elements 101 to 104 of an on-board antenna 105 of a rail vehicle.
  • the antenna elements 101 to 104 may be individually controlled (as is indicated by an arrow 106).
  • the rail vehicle moves in a direction 116.
  • the antenna elements 101 to 104 can be used to provide beams 110, 111 and 112 of different directions.
  • the beam 110 has an angle of 45°
  • the beam 111 has an angle of 90°
  • the beam 112 has an angle of -45° with regard to the direction of a track 107.
  • Fig.1 also shows the track 107 and a balise 108 that is located adjacent to the track 107.
  • a telepowering signal 113 that is sent from the rail vehicle towards the balise 108 activates the balise 108. Subsequent to such activation, the balise 108 sends an information (comprising, e.g., an identification of the balise 108) as is indicated by arrows 114 and 115.
  • the rail vehicle receives the information from the balise 108 via the beam 110, which has a direction of arrival amounting to ca. 45°.
  • the rail vehicle receives the information from the balise 108 via the beam 111, which has a direction of arrival amounting to ca. 90°.
  • the rail vehicle receives the information from the balise 108 via the beam 112, which has a direction of arrival amounting to ca. -45°.
  • the direction 116 can be determined after the train has passed over the a single balise 108.
  • the information of the balise 108 are thus received via the three beams 110, 111 and 112 at different moments in times, i.e. with timestamps that show an increase of time.
  • Additional signals that may be received via multipath scattering can be filtered out, which allows validating the balise 108.
  • a velocity of the rail vehicle can be approximated based on the timestamps of the information received via the beams 110 and 112.
  • An estimated calculation may be as follows: A distance between the beam 110 and the beam 112 may amount to d and it may preferably be a constant distance.
  • the uplink signal from the balise 108 is received at the beam 110 at a time T0 and at the beam 112 at a time T1. Hence, a velocity may amount to approximately d/ (T1-T0).
  • Fig.2 shows an arrangement that is similar to Fig.1 .
  • a second balise 109 is present, which supplies an information M2 (comprising an identification of the balise 109), which in this example corresponds to (unwanted) cross-talk 201 when the rail vehicle passes the balise 108.
  • the information supplied by the balise 108 is hereinafter referred to as information M1.
  • the rail vehicle receives the information M1 from the balise 108 via the beam 110, which has a direction of arrival amounting to ca. 45°. Also, at the time T0, the rail vehicle receives the information M2 from the balise 109 via the beam 112, which has a direction of arrival amounting to ca. -45°.
  • the rail vehicle receives the information M1 from the balise 108 via the beam 111, which has a direction of arrival amounting to ca. 90°. Also, at the time T0+x, the rail vehicle receives the information M2 from the balise 109 via the beam 112, which has a direction of arrival amounting to ca. -45°.
  • the rail vehicle receives the information M1 from the balise 108 and the information M2 from the balise 109 via the beam 112, which has a direction of arrival amounting to ca. -45°.
  • the antenna 105 of the rail vehicle at any moment of this example receives the information M1 and the information M2 from both balises 108 and 109. Due to the angles of the beams 110, 111, 112, the antenna 105 will receive the information M1 and the information M2 via different beams 110 to 112 (and hence different angles) with considerable phase shift.
  • a direction of arrival (DOA) algorithm is provided in [1].
  • the algorithm referred to is shown on page 114 of [1].
  • the balise 108 may be confirmed, cross-talk from the wrong balise 109 can be discarded.
  • the balise 108 can be validated if the information M1 is subsequently received at the beams 110, 111 and 112.
  • cross-talk that only is received by beam 112 can be identified and discarded.
  • cross-talk i.e. the information M2 from the balise 109
  • the information M1 from the balise 108 being successively received at the DOAs of beams 110, 111 and 112 allows validating the balise 108.
  • the timestamps at which the information M1 is received at each at these DOAs utilized for various applications. Reference is also made to the algorithm described in [1].
  • Fig.3 shows an exemplary on-board antenna arrangement comprising several antenna elements 301 to 306 to supply the beams 110, 111 and 112.
  • the antenna elements 301 to 306 are arranged in doublets, wherein the doublet comprising the antenna elements 301, 302 is arranged substantially perpendicular to the doublet comprising the antenna elements 303, 304.
  • the doublet comprising the antenna elements 305, 306 is arranged substantially perpendicular in parallel to the doublet comprising the antenna elements 301, 302.
  • the antenna element 301 and the antenna element 302 are fed via a phase shifter 307, which is connected to a power divider and impedance network 309.
  • the antenna element 303 and the antenna element 304 are connected to the power divider and impedance network 309.
  • the antenna element 305 and the antenna element 306 are fed via a phase shifter 308, which is connected to the power divider and impedance network 309.
  • the power divider and impedance network 309 is supplied by a power source 310.
  • the phase shifter 307 may introduce a phase shift amounting to ⁇ and the phase shifter 308 may introduce a phase shift amounting to - ⁇ .
  • a range (for generated beams) may preferably be less than 77.5 degrees and larger than 45 degrees with reference to the track.
  • the separation 311, 312, 313 between the antenna elements may be any fractional value of ⁇ /2, wherein ⁇ is the transmission wavelength.
  • the separation 311, 312, 313 may be arranged such that the beams 110 to 112 have a half power beam width separation of a fractional value of lambda (x ⁇ ). This may add to the flexibility in receiving the information from the balise at different DOA angles at different timestamps.
  • the examples described herein may in particular suggest providing a multi-beam system with adaptive beams and low side lobe levels as on-board antenna of a rail vehicle.
  • the antenna elements may be supplied, e.g., as single antennas or in doublet antennas.
  • the doublet antennas may in particular be separated by identical distances.
  • An adaptive beam-forming as described in [1] may be applied to form multiple beams at different angles in the elevation plane.
  • a direction (or angle) of arrival (as described in [1]) of received signals may be determined at the on-board antenna of the rail vehicle.
  • the rail vehicle comprises a receiver with said on-board antenna.
  • the received signal may be transmitted from a transponder, e.g., a balise that is located within or adjacent to the track.
  • the balise may send an information (comprising, e.g., an identification of the balise) towards the rail vehicle, which is then received at the differently angled beams of the on-board antenna at different times.
  • the solution presented herein allows determining a direction of movement of the rail vehicle based on the information received at any two of the beams:
  • the beam that receives the information first indicates the direction of movement. This may work in case at least two beams are used.
  • synchronized clocks may be used.
  • the location of the balise can be determined and in particular validated with high accuracy by the information received at the beams.
  • the information from the actual balise to be detected follows a pattern that is to be detected via the several beams (in the example shown in Fig.2 , the information from the balise 108 is detected first by the beam 110, then by the beam 111 and subsequently by the beam 112).
  • a velocity of the rail vehicle can be determined based on the information received via the several beams, in particular via beams that have an opposing phase difference (in the example shown in Fig.1 , by the beams 110 and 112).
  • the solution presented increases the flexibility in installing balises, because the on-board antenna is able to determine and cancel cross-talk from various balises and it increases the detection accuracy of balises.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Radio Transmission System (AREA)
EP17194052.1A 2017-09-29 2017-09-29 Bordvorrichtung für ein schienenfahrzeug Active EP3461715B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
HUE17194052A HUE056125T2 (hu) 2017-09-29 2017-09-29 Fedélzeti antenna vasúti jármûhöz
EP17194052.1A EP3461715B1 (de) 2017-09-29 2017-09-29 Bordvorrichtung für ein schienenfahrzeug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17194052.1A EP3461715B1 (de) 2017-09-29 2017-09-29 Bordvorrichtung für ein schienenfahrzeug

Publications (2)

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EP3461715A1 true EP3461715A1 (de) 2019-04-03
EP3461715B1 EP3461715B1 (de) 2021-07-21

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HU (1) HUE056125T2 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110758484A (zh) * 2019-10-29 2020-02-07 交控科技股份有限公司 列车自动驾驶方法、vobc、tias、区域控制器
WO2020239438A1 (de) * 2019-05-28 2020-12-03 Siemens Mobility GmbH Vorrichtung und verfahren zur geschwindigkeitsbestimmung eines schienenfahrzeugs
CN114162183A (zh) * 2020-09-11 2022-03-11 比亚迪股份有限公司 列车的定位处理方法、装置及列车

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1349305A (fr) * 1962-11-29 1964-01-17 Csf Dispositif d'identification de stations mobiles
EP2905196A1 (de) * 2014-02-11 2015-08-12 Siemens Aktiengesellschaft Empfangsanordnung für Geschwindigkeitsüberwachung, und entsprechende Methode
US20160001803A1 (en) * 2012-12-04 2016-01-07 Korea Railroad Research Institute Apparatus for detecting train position

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1349305A (fr) * 1962-11-29 1964-01-17 Csf Dispositif d'identification de stations mobiles
US20160001803A1 (en) * 2012-12-04 2016-01-07 Korea Railroad Research Institute Apparatus for detecting train position
EP2905196A1 (de) * 2014-02-11 2015-08-12 Siemens Aktiengesellschaft Empfangsanordnung für Geschwindigkeitsüberwachung, und entsprechende Methode

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
RIAS MUHAMED: "Direction of Arrival Estimation using Antenna Arrays", THESIS SUBMITTED TO THE FACULTY OF THE VIRGINIA POLYTECHNIC INSTITUTE AND STATE UNIVERSITY, January 1996 (1996-01-01), Retrieved from the Internet <URL:https://theses.lib.vt.edu/theses/available/etd-10022008-063154/unrestricted/LD5655.V855 1996.M843.pdf>

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020239438A1 (de) * 2019-05-28 2020-12-03 Siemens Mobility GmbH Vorrichtung und verfahren zur geschwindigkeitsbestimmung eines schienenfahrzeugs
CN110758484A (zh) * 2019-10-29 2020-02-07 交控科技股份有限公司 列车自动驾驶方法、vobc、tias、区域控制器
WO2021082256A1 (zh) * 2019-10-29 2021-05-06 交控科技股份有限公司 列车自动驾驶方法、vobc、tias、区域控制器
CN114162183A (zh) * 2020-09-11 2022-03-11 比亚迪股份有限公司 列车的定位处理方法、装置及列车
CN114162183B (zh) * 2020-09-11 2023-03-14 比亚迪股份有限公司 列车的定位处理方法、装置及列车

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Publication number Publication date
HUE056125T2 (hu) 2022-01-28
EP3461715B1 (de) 2021-07-21

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