WO2016177541A1 - System and method for automatic track element approach - Google Patents
System and method for automatic track element approach Download PDFInfo
- Publication number
- WO2016177541A1 WO2016177541A1 PCT/EP2016/058004 EP2016058004W WO2016177541A1 WO 2016177541 A1 WO2016177541 A1 WO 2016177541A1 EP 2016058004 W EP2016058004 W EP 2016058004W WO 2016177541 A1 WO2016177541 A1 WO 2016177541A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- speed
- guided vehicle
- speed profile
- ssp
- profile
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000005065 mining Methods 0.000 claims description 2
- 230000001960 triggered effect Effects 0.000 claims description 2
- 239000003981 vehicle Substances 0.000 description 106
- 230000001276 controlling effect Effects 0.000 description 11
- 230000006378 damage Effects 0.000 description 4
- 238000010420 art technique Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- SDIXRDNYIMOKSG-UHFFFAOYSA-L disodium methyl arsenate Chemical compound [Na+].[Na+].C[As]([O-])([O-])=O SDIXRDNYIMOKSG-UHFFFAOYSA-L 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or train for signalling purposes
- B61L15/0062—On-board target speed calculation or supervision
Definitions
- the present invention concerns a system and a method for au ⁇ tomatically controlling a guided vehicle approaching a track element.
- the present invention is directed to a method and a system configured for controlling the automatic approach of a guided vehicle in direction of a track element, e.g. a bumper, until a stop of the guided vehicle close to said track element.
- a track element e.g. a bumper
- the track element is preferentially a bumper, i.e. a device known in the art that prevents guided vehicles from overrunning the bumper position, e.g. a dead-end of a stub track.
- Guided ve ⁇ hicle refers to public transport means such as subways, trains or train units, etc., as well as load transporting means such as, for example, freight trains, for which safety is a very important factor and which are guided along a railway or track by at least one rail, in particular by two rails, wherein tracks might be equipped with a bumper installed at a predefined position, e.g. at a track dead-end, in order to prevent an overrun of said predefined position by the guided vehicle.
- public transport means such as subways, trains or train units, etc.
- load transporting means such as, for example, freight trains, for which safety is a very important factor and which are guided along a railway or track by at least one rail, in particular by two rails, wherein tracks might be equipped with a bumper installed at a predefined position, e.g. at a track dead-end, in order to prevent an overrun of said predefined position by the guided vehicle.
- a guided vehicle is authorized by its Automatic Train Protection (ATP) system to approach a track element up to a predefined security distance that defines the minimum distance separating the track element from the guided vehicle once the latter is at standstill.
- ATP Automatic Train Protection
- the ATP system is configured for controlling the speed of the guided vehicle in function of the distance separating said guided vehicle from the position of the track element, and if said speed exceeds a limit speed defined by a deceleration curve, then the ATP system automatically triggers an emergency brake in order to prevent e.g. a collision with a bumper.
- the ATP system prevents thus the guided vehicle to stop within a dis ⁇ tance from the bumper that is smaller than the predefined se ⁇ curity distance.
- nominal safety conditions which are defined for avoiding a collision of the guided ve ⁇ hicle with the track element and for ensuring said predefined security distance cannot be respected anymore.
- prior art techniques propose for example to remove the guided vehicle propulsion ahead of the track element, which has the adverse effect that if the guided ve ⁇ hicle stops short, then it cannot restart.
- An objective of the present invention is to propose a system and a method that allows a guided vehicle to approach a track element, e.g. a bumper, closer than the predefined security distance controlled by the ATP system, the system and method according to the invention being simple, cost effective, and able to prevent any damages when colliding with said track element while said predefined security distance is exceed- ed/overrun.
- a track element e.g. a bumper
- the invention provides an ATP system for controlling a track element (e.g. bumper) guided vehicle approach, said ATP sys ⁇ tem comprising:
- a database comprising data defining or char ⁇ acterizing a first speed profile, or enabling the determination or calculation of said first speed profile, for an approach of a track element installed on a track sec- tion, wherein the first speed profile defines a maximum authorized speed for the guided vehicle in function of its position compared to the position of the track ele ⁇ ment, the maximum authorized speed for positions of the guided vehicle falling within a predefined security dis ⁇ tance from the track element position being zero.
- a position falling within a predefined distance from another position means that the relative distance, e.g. measured on the track or track section, separating the position from said another position is smaller or equal to the predefined distance.
- the first speed profile defines for a position x of the guided vehicle a maximum authorized speed for said guided vehicle in function of the rela ⁇ tive distance, e.g. measured on the track or track sec ⁇ tion, separating the position x from the position of the track element;
- control unit configured for controlling the guided ve ⁇ hicle speed according to said first speed profile, for example for controlling if said guided vehicle speed at said position x exceeds the maximum authorized speed de ⁇ fined in the first speed profile for the position x, wherein the control unit is in particular able to auto ⁇ matically collect guided vehicle speed data and guided vehicle position data.
- the control unit is able to automatically compare, for each position x of the guided vehicle, the speed of said guided vehicle with the maximum authorized speed defined by the first speed profile for said position x;
- control unit is configured for automatically deter ⁇ mining a second speed profile for the guided vehicle, wherein the second speed profile defines a speed limit for the guided vehicle in function of its position compared to the position of the track element, said second speed profile defining in particular for at least one position x of the guided vehicle a speed limit that is greater than the maximum authorized speed for said posi ⁇ tion x, and wherein the second speed profile prevails over the first speed profile for controlling the guided vehicle speed by means of the control unit when trigger ⁇ ing an emergency brake.
- the second speed profile is only de ⁇ fined/calculated by the control unit for positions of the guided vehicle comprised/failing within an engaging distance from the track element, wherein the engaging distance is greater than or equal to the predefined security distance.
- the second speed profile defines for each posi ⁇ tion x of the guided vehicle comprised within the engaging distance from the track element position a speed limit in function of the position of the track element, wherein the second speed profile comprises at least one speed limit de ⁇ fined for a position x that is greater than the maximum authorized speed defined for said position x in the first speed profile.
- the second speed profile comprises speed limits in function of the position of the guided vehi- cle, wherein for at least one set of positions x of said guided vehicle comprised within the engaging distance, the speed limit is greater than the maximum authorized speed de ⁇ fined by the first speed profile for the positions x of the guided vehicle comprised in this set of positions.
- Said set of positions is for example the positions of the guided vehi ⁇ cle within the engaging distance for which the maximum authorized speed is defined as strictly positive by the first speed profile.
- the second speed profile defines the speed limit in function of the guided vehicle position compared to the track element position on said track, wherein, for a same guided vehicle position, said speed limit is greater than the maxi- mum authorized speed until the guided vehicle position falls within a predefined approach distance from the track element.
- the predefined approach distance is the distance between the position of the track element and the position of the guided vehicle in said second speed profile from which the speed limit continuously equal to zero until the position of the guided vehicle coincides with the position of the track ele ⁇ ment.
- the speed limit for positions of the guided vehicle within the predefined approach distance is thus preferential ⁇ ly zero, the predefined approach distance being smaller than the predefined security distance.
- control unit is further configured for con- trolling if the guided vehicle speed exceeds either the speed limit defined in the second speed profile or the maximum au ⁇ thorized speed defined in the first speed profile and for au ⁇ tomatically triggering an emergency brake if and only if
- the guided vehicle speed measured for a position x of the guided vehicle exceeds at least the speed limit de ⁇ fined in the second speed profile, or exceeds the speed limit AND the maximum authorized speed defined by the first speed profile (FSP) , for said position x if/as soon as such a speed limit is defined for said position x in the second speed profile; or
- the guided vehicle speed measured for a position x of the guided vehicle exceeds the maximum authorized speed for said position x if/as soon as the second speed pro ⁇ file does not define a speed limit for said position x.
- the second speed profile prevails over the first speed pro ⁇ file means that as soon as said second speed profile is de ⁇ termined by the control unit for a position of the guided ve ⁇ hicle, then the triggering of an emergency brake for a guided vehicle speed exceeding the maximum authorized speed defined in the first speed profile for said position is cancelled or withdrawn and replaced by a triggering of an emergency brake for guided vehicle speed exceeding the speed limit defined in the second speed profile for said position, and this for each position of the guided vehicle for which a speed limit and a maximum authorized speed are respectively defined by the sec ⁇ ond and first speed profile.
- the first speed profile is the nominal/regular/normal speed profile defined for a guided vehicle approaching a track element until a predefined security distance is reached and the second speed profile is specific to a track element approach overrunning the prede ⁇ fined security distance, the second speed profile defining thus a "close track element approach" for the guided vehicle approaching said track element.
- the track el ⁇ ement is a bumper.
- the present invention concerns also a method for controlling the displacement of a guided vehicle approaching a track element, in other words a guided vehicle approach of a track element, the method according to the invention comprising the steps: - determining, or defining, e.g. in a database, a first speed profile for an approach of the track element in ⁇ stalled on a track section wherein said guided vehicle is moving, said first speed profile defining a maximum au- thorized speed of the guided vehicle in function of its position on the track section compared to the position of the track element on said track section, the maximum authorized speed for positions of the guided vehicle fall ⁇ ing within a predefined security distance from the track element being zero;
- the second speed profile defines guided vehicle speed limits in function of the guided vehicle position compared to the track element position on said track.
- the second speed profile defines a speed limit that is greater than the maximum authorized speed defined by the first speed profile until the guided vehicle posi- tion falls within a predefined approach distance from the track element position;
- an emergency brake is triggered if the guided vehicle speed measured for a guided vehicle posi ⁇ tion exceeds either the speed limit defined for said po ⁇ sition if such a speed limit is defined by the second speed profile for said position, or the maximum authorized speed for said position if the second speed profile does not define a speed limit for said position.
- the step "controlling if the guided vehicle speed exceeds the maximum authorized speed defined in the first speed profile or the speed limit defined in the second speed profile” comprises in particular automat ⁇ ically collecting guided vehicle speed data and guided vehi ⁇ cle position data, e.g. from a speed measuring device and/or a positioning device of the guided vehicle, and comparing, for each position of the guided vehicle, its speed with the maximum authorized speed and/or the speed limit in order to determine if the guided vehicle speed exceeds the speed lim ⁇ it defined in the second speed profile and/or the maximum au ⁇ thorized speed defined in the first speed profile
- the database according to the invention com ⁇ prises track element parameters (such as the position of the track element, a mechanical property of the track element like a length of a bumper actuator and/or its damping coefficient, and/or the maximum kinetic energy it may absorb in case of collision without causing damages to the bumper, etc.) and guided vehicle parameters (like its load, its brak- ing force, its speed, the maximum kinetic energy it may ab ⁇ sorb in case of collision without causing damages to the guided vehicle, etc.) .
- the control unit is configured for determining the second speed profile from said track element parameters and/or guided vehicle parameters.
- said track element is a bumper and the bumper parameters allow to calculate the maximum kinetic energy that might be absorbed by the bumper in case of a collision of the guided vehicle with said bumper.
- the speed limit for a position of the guided vehicle is deter ⁇ mined/calculated by the control unit from said track element parameters, guided vehicle parameters, and said maximum ki ⁇ netic energy.
- the minimum kinetic energy among the maximum kinetic energy that might be absorbed by the track element and the maximum kinetic energy that might be absorbed by the guided vehicle is automatically chosen as pa ⁇ rameter for the calculation of the second speed profile.
- the speed limit determined/calculated for a position P of the guided vehicle by the control unit is equal to the speed of the guided vehicle at said position P that will gen ⁇ erate at the position B of the bumper a kinetic energy equals to said maximum kinetic energy that might be absorbed by the bumper or by the guided vehicle if the guided vehicle trig ⁇ gers an emergency brake from said position P, the smallest of said maximum kinetic energy being chosen for the calculation.
- the calculation/determination of said speed limit takes into account other parameters such as a reaction time for triggering the emergency brake, and/or a braking force, etc.
- the emergency brake may take into con- sideration passenger safety in order to avoid any brutal braking and passenger injuries.
- the first speed profile is computed with the assumption that the guided vehicle will never reach position B.
- the second speed profile is preferentially computed with the assumption that the guided vehicle which triggers an emergency break at a distance x from the position B (e.g. at the position B-Da - see Fig. 2) because exceeding a speed S x defined for said po- sition x by the second speed profile would collide with the track element, e.g. the bumper, with a kinetic energy less than the maximum kinetic energy defined for said track ele ⁇ ment, e.g. bumper, i.e. less than the maximum kinetic energy that can be absorbed by the guided vehicle or the bumper.
- the database comprises a classification of the track elements into classes in function of their parame ⁇ ters, and optionally, the control unit is configured for storing for each class of track elements a second speed pro- file in function of guided vehicle parameters, said second speed profile characterizing the speed limit in function of the separation distance between the guided vehicle and the track element belonging to that class.
- Figure 1 schematic illustration of a bumper approach ac- cording to prior techniques.
- FIG 2 schematic illustration of a bumper approach according to the invention.
- Figure 1 and Figure 2 show an ATP system 1 according to the invention installed on-board a guided vehicle 2 which is con ⁇ figured for moving on a track 3 that coincides with the ab ⁇ scissa of the graph.
- the graph in Figure 1, as well as in Figure 2, represents the speed of the guided vehicle (in or ⁇ dinate) in function of its position (in abscissa) .
- the track 3 is in particular a stub track equipped with a track element that is a bumper 4.
- the position of the bumper 4 on the track is represented by the letter B, and will be refer to hereaf ⁇ ter as "position B" of the bumper 4 (or more generally of a track element) . While we illustrate the present invention with the particular case of a track element being a bumper, the skilled man will understand that the features disclosed in relation with the bumper also apply to the general case when considering a track element.
- the ATP system 1 comprises a control unit 11 and a database 12 connected to each other.
- the control unit 11 may also be connected to a speed measuring device 13 configured for measuring the speed of the guided vehicle and/or to a positioning device config ⁇ ured for measuring/determining the position of the guided vehicle 2 on the track 3.
- the con ⁇ tinuous line represents the Emergency Brake De ⁇ celeration curve for the guided vehicle 2, to which will re ⁇ fer hereafter by "EBD” for simplicity.
- the dashed-dotted line, called FSP represents the first speed profile, i.e. a profile of speed characterizing the nominal/regular/normal speed of the guided vehicle 2 when approaching the bumper 4. We will refer hereafter to the first speed profile by "FSP" for simplicity.
- the FSP defines a maximum authorized speed of the guided vehicle 2 in function of its position x on the track section or track 3 compared to the position B of the bumper, the maximum authorized speed for positions of the guided vehicle 2 falling within a predefined security dis- tance Ds from the bumper 4 being zero. If the position of the bumper 4 is B, then the FSP shows in particular decreasing maximum authorized speed values when decreasing the distance separating the guided vehicle position from the bumper posi- tion, until the curve formed by said values crosses the ab ⁇ scissa at the position B-Ds and has then maximum authorized speed values equal to zero until the position B of the bumper 4 is reached.
- the ATP system 1 for each position x of the guided vehicle 2, the ATP system 1 is configured for compar ⁇ ing the speed of the guided vehicle 2 at the position x with the maximum authorized speed defined by the FSP for said po ⁇ sition x. If the speed of the guided vehicle at said position x is higher than the maximum authorized speed for said posi ⁇ tion x, then the ATP system 1 automatically triggers an emergency brake for decelerating the guided vehicle 2 according to the EBD. Consequently, the guided vehicle 2 cannot over ⁇ run/pass the position B-Ds.
- the graph of Figure 2 comprises a third curve represented by a dashed line and that illustrates the second speed profile, hereafter called SSP for simplicity.
- the SSP defines, when implemented by the ATP system 1 accord ⁇ ing to the invention, a close bumper approach, i.e. allows an overrun of the position B-Ds by the guided vehicle 2 when ap ⁇ proaching the bumper B while ensuring safety for the guided vehicle 2 if it moves at a speed smaller than a speed limit.
- the SSP defines thus a speed limit Sx, e.g. a constant speed limit S L , of the guided vehicle 2 in function of its position x on the track section or track 3 compared to the position B of the bumper.
- the speed limit Sx for a position x is greater than the maximum authorized speed for said position x, in particular for each position x for which a speed limit is strictly positive.
- the speed limit for posi ⁇ tions of the guided vehicle 2 falling within a predefined ap- proach distance Da from the position of the bumper 4 is zero.
- the FSP shows in particular speed limit values that are high ⁇ er than the values of the maximum authorized speed when de ⁇ creasing the distance separating the guided vehicle position from the bumper position until the curve formed by the speed limit values reaches the abscissa at the position B-Da (i.e.
- the second speed profile defines preferentially at least one set of positions x comprised within the engaging distance for which the speed limit is greater than the maximum authorized speed defined by the first speed profile for said positions x.
- a set of positions is for example the set of posi ⁇ tions of the guided vehicle within the engaging distance for which the maximum authorized speed is defined as strictly positive by the first speed profile.
- the second speed profile may define another set of positions x comprised within the engaging distance and for which the speed limit is greater or equal to the maximum authorized speed defined by the first speed profile.
- the speed limit is strictly greater than the maximum authorized speed for posi ⁇ tions comprised in the interval [B-Ds ; B-Da[, and equal, e.g. equal to 0, for positions comprised in the interval [B- Da ; Da] (cf . Fig. 2) .
- the SSP is automatically determined by the control unit 11 according to the invention.
- the SSP is deter ⁇ mined/calculated by the control unit 11 from bumper parame- ters, and/or guided vehicle parameters.
- the speed limit defined by the SSP for a position x of the guided vehicle is calculated for avoiding a kinetic energy at the bumper position B that overcomes the maximum kinetic energy that might be absorbed by the bumper in case of a collision of the guided vehicle 2 with said bumper 4 at the position B when the guided vehicle triggers an emergency braking at the position x.
- the ATP system 1 for each position x of the guided vehicle 2, is configured for com ⁇ paring the speed of the guided vehicle 2 at the position x with the maximum authorized speed defined by the FSP for said position x and/or the speed limit defined by the SSP if such a speed limit has been determined by the control unit 11 for said position x. If the speed of the guided vehicle at said position x is higher than the speed limit defined for said position if such a speed limit has been defined, or higher than the maximum authorized speed for said position x if no speed limit has been determined for said position x, then the ATP system 1 automatically triggers an emergency brake for decelerating the guided vehicle 2 according to the EBD.
- the guided vehicle 2 can overrun/pass the position B-Ds that was imposed by the FSP until reaching a position B- Da that might be defined for example in function of the bump ⁇ er parameters.
- the control unit 11 determines said SSP if and only if the database comprises track element, e.g. bumper, parameters, in particular if and only if said bumper parameters allow to determine said maximum kinetic energy.
- the ATP system 1 is in particular configured for being installed on-board the guided vehicle 2 and allows a closer approach of bumpers 4 compared to prior art ATP systems.
- the con ⁇ trol unit 11 is configured for calculating/determining said SSP for positions of the guided vehicle comprised within an engaging distance ED from the bumper position B.
- the control unit 11 is in particular configured for calculating a speed limit only for positions of the guided vehicle comprised between B-ED and B, i.e. for a set of posi ⁇ tions comprised within the interval [B-ED, B] .
- the control unit 11 is in particular configured for
- the control unit 11 is configured for cancelling the triggering of an emergency brake for a guided vehicle speed exceeding the maximum authorized speed defined in the first speed profile for guided vehicle positions x satisfying B-x ⁇ ED and re ⁇ placing it by a triggering of an emergency brake for guided vehicle speed exceeding the speed limit defined in the SSP.
- the part of the FSP curve represented in dashed-dotted-dotted line will not be taken into account for triggering an emergency break from the FSP.
- the control unit 11 is configured for storing the calculated/determined SSP in the database 12.
- the control unit 11 is capable of classifying the SSP in function of bumper parameters, so that classes of bumpers are automatically determined, wherein each class might be charac ⁇ terized by one SSP.
- the present invention proposes a simple system and method allowing a guided vehicle 2 to overrun a security distance Ds while maintaining a high degree of safety for the guided vehicle 2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201680026071.6A CN107548368B (en) | 2015-05-04 | 2016-04-12 | System and method for automatically accessing a rail element |
BR112017023387A BR112017023387A2 (en) | 2015-05-04 | 2016-04-12 | system and method for automatic approach of track element |
HK18107411.6A HK1247899A1 (en) | 2015-05-04 | 2018-06-07 | System and method for automatic track element approach |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15290125.2 | 2015-05-04 | ||
EP15290125.2A EP3090918B1 (en) | 2015-05-04 | 2015-05-04 | System and method for automatic track element approach |
Publications (1)
Publication Number | Publication Date |
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WO2016177541A1 true WO2016177541A1 (en) | 2016-11-10 |
Family
ID=53180676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2016/058004 WO2016177541A1 (en) | 2015-05-04 | 2016-04-12 | System and method for automatic track element approach |
Country Status (6)
Country | Link |
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EP (1) | EP3090918B1 (en) |
CN (1) | CN107548368B (en) |
BR (1) | BR112017023387A2 (en) |
ES (1) | ES2902218T3 (en) |
HK (1) | HK1247899A1 (en) |
WO (1) | WO2016177541A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2626617A1 (en) * | 1976-06-14 | 1977-12-15 | Siemens Ag | Automatic locomotive braking with limited manual override - has driver's control connected to AND:gate controlling converter scaling down pulses from speed transducer |
EP2832581A1 (en) * | 2012-03-30 | 2015-02-04 | The Nippon Signal Co., Ltd. | Train control device |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5823274B2 (en) * | 1976-08-24 | 1983-05-13 | 日本国有鉄道 | Automatic train stop safety control method |
KR101079903B1 (en) * | 2009-08-24 | 2011-11-04 | 엘에스산전 주식회사 | Apparatus and method for controlling speed in Automatic Train Operation |
CN103350709B (en) * | 2013-07-23 | 2015-07-22 | 兰州交通大学 | Method for shortening safe distance between trains |
-
2015
- 2015-05-04 EP EP15290125.2A patent/EP3090918B1/en active Active
- 2015-05-04 ES ES15290125T patent/ES2902218T3/en active Active
-
2016
- 2016-04-12 CN CN201680026071.6A patent/CN107548368B/en active Active
- 2016-04-12 BR BR112017023387A patent/BR112017023387A2/en not_active IP Right Cessation
- 2016-04-12 WO PCT/EP2016/058004 patent/WO2016177541A1/en active Application Filing
-
2018
- 2018-06-07 HK HK18107411.6A patent/HK1247899A1/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2626617A1 (en) * | 1976-06-14 | 1977-12-15 | Siemens Ag | Automatic locomotive braking with limited manual override - has driver's control connected to AND:gate controlling converter scaling down pulses from speed transducer |
EP2832581A1 (en) * | 2012-03-30 | 2015-02-04 | The Nippon Signal Co., Ltd. | Train control device |
Also Published As
Publication number | Publication date |
---|---|
CN107548368B (en) | 2020-10-27 |
EP3090918B1 (en) | 2021-09-15 |
EP3090918A1 (en) | 2016-11-09 |
ES2902218T3 (en) | 2022-03-25 |
CN107548368A (en) | 2018-01-05 |
BR112017023387A2 (en) | 2018-07-17 |
HK1247899A1 (en) | 2018-10-05 |
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