EP1048545A1 - Verfahren zur Ermittlung der Geschwindigkeit eines Schienenfahrzeuges und Gerät dazu - Google Patents
Verfahren zur Ermittlung der Geschwindigkeit eines Schienenfahrzeuges und Gerät dazu Download PDFInfo
- Publication number
- EP1048545A1 EP1048545A1 EP99870079A EP99870079A EP1048545A1 EP 1048545 A1 EP1048545 A1 EP 1048545A1 EP 99870079 A EP99870079 A EP 99870079A EP 99870079 A EP99870079 A EP 99870079A EP 1048545 A1 EP1048545 A1 EP 1048545A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- block
- chord
- current
- voltage
- track
- 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- Withdrawn
Links
- 238000009434 installation Methods 0.000 title claims description 10
- 238000000691 measurement method Methods 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 21
- 230000008878 coupling Effects 0.000 claims abstract description 7
- 238000010168 coupling process Methods 0.000 claims abstract description 7
- 238000005859 coupling reaction Methods 0.000 claims abstract description 7
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
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
-
- 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
- B61L25/021—Measuring and recording of train speed
-
- 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
Definitions
- the present invention relates to a method intended for measuring the speed of a vehicle running on a railway type track.
- the present invention also relates to the installation intended for the implementation of this process.
- beacons along railroad tracks in order to perform a measurement of the speed of the vehicle traveling on these tracks.
- beacons which are arranged at known and fixed distances emit a signal.
- the vehicle passing near this tag detects using an antenna the passage above the first tag and performs a time measurement until the passage of the second beacon.
- the tags are placed at relatively large distances, and it essentially to measure average speeds over the distance travelled.
- An electrical joint is consisting of two chord blocks used for coupling energy of the sections of track adjacent to each block okay and the short track distance between these two chord blocks (15 to 30 meters).
- first chord block serves as a transmitter at a frequency given while the second chord block serves as a receiver at another frequency.
- the functions of the electrical seal are on the one hand to prevent the propagation of the signal of a track circuit to the adjacent track circuit and other part of coupling the transmitter and the receiver with the way.
- the present invention aims to provide a solution that can offer the maximum guarantees of safety in the railway sense of the term to the extent of speed of a vehicle moving on a type track rail.
- the present invention aims more particularly to propose a process which allows a estimate of average speed independently causes of errors due for example to skating and the axle clutch, and which is based on the detection the passage of a train of joints separating the different track circuits.
- the present invention aims to provide a system that can get rid of tag placement on along the tracks.
- the present invention aims to use already present equipment which allow the location of the train and which are made up by track circuits with electrical seals.
- the present invention relates to a method of measuring the speed of a vehicle equipped with a antenna and traveling on a track with two rails in the form of sections of track called "cantonments" separated by electrical seals, each electrical joint consisting of two tuning blocks and the predetermined section of track located between them, each of the tuning blocks allowing energy coupling for the adjacent section of track serving as a block, characterized in that at least two are detected current or voltage discontinuities of the signal seen by an antenna present in the vehicle traveling on the track near the regions of the first and second chord blocks of the same electrical joint, in order to measure the speed of the vehicle traveling on the track.
- the first discontinuity is obtained during passage of the axle to the right of the first block of agreement for the frequency of this first chord block.
- the second discontinuity is obtained in exerting an electrical action at the frequency of the first chord block.
- This second discontinuity is obtained by creating an electric or magnetic field in the region of second chord block.
- This electric or magnetic field is generated by a current proportional to the current emitted by the voltage injected at the first chord block. This field is generated directly by the current emitted by said voltage.
- the action electric is a voltage injected in series with the voltage at the second frequency of the second chord block. This voltage injected in series is proportional to that which is injected into the first chord block.
- the action electric is the injection of a current into a generator of voltage present in the second chord block, this current traversing a loop arranged between the rails, said current being proportional to the current emitted by the voltage injected into the first chord block.
- the signal detected by the antenna located on board the vehicle traveling on the track is filtered at the frequency of the voltage injected at the first tuning block.
- the present invention also relates to an installation for implementing the process such as previously described, in which the path is organized in the form of cantonments separated by joints electrical, each electrical joint consisting of at least minus two chord blocks and the short track section located between them.
- This installation includes means to generate at least two discontinuities in current or in voltage in the signal seen by the antenna present in the vehicle traveling on the track near the regions of first and second chord blocks of the same joint electric.
- An electrical seal as shown in Figure 1 consists of a first TU.F1 chord block located a first side (left), which will serve as a transmitter in view to generate a voltage in the channel at the frequency F1 and allows the energy coupling of this first side (left) of the lane adjacent to the chord block.
- a second block agree TU.F3, placed at a distance of 15 to 30 meters, allows the energy coupling of the other part of the track (right) adjacent to this chord block.
- This second block agree serves as a receiver for a frequency F3. he could possibly also be a transmitter which would generate a voltage at frequency F3.
- Figure 2 shows a track circuit comprising several sections of track organized in cantonments and separated by electrical seals each consisting of two chord blocks coupled two to of them.
- F1 the two tuning blocks TU.F1 and TU.F1 'are equivalent to a capacity which achieves track section agreement (block 1) included between these two blocks, while the two chord blocks TU.F3 and TU.F3 'are equivalent to short circuits to this same frequency (F1).
- block 1 the two tuning blocks TU.F1 and TU.F1 'are equivalent to a capacity which achieves track section agreement (block 1) included between these two blocks, while the two chord blocks TU.F3 and TU.F3 'are equivalent to short circuits to this same frequency (F1).
- F3 the function of the chord blocks is then reversed.
- the passing axle 3 creates a shunt or short circuit between rails 1 and 2. More precisely, the behavior of the current I generated at frequency F1 and present in the rail 1 in front of axle 3 is modified.
- the present invention consists in creating a second 8U discontinuity near the second block agree TU.F3 and use these two discontinuities occurring at a known distance in order to be able to calculate the average train speed between the two positions where produce said discontinuities.
- a loop 4 between rails 1 and 2 near the TU.F3 block receiver component and equivalent to a short circuit to the frequency F3.
- This loop 4 is supplied by a current at the frequency F1 which is preferably proportional to the current of block TU.F1. It is preferably connected in series with this block.
- the field magnetic generated by loop 4 creates the second discontinuity 8 necessary for the implementation of the process according to the present invention.
- the TU.F3 block is equivalent to a short circuit for the frequency F1.
- the generator 5 is preferably supplied from the power supply of the TU.F1 block.
- a current generator 6 is connected in parallel to the terminals of the TU.F3 block.
- the flow thus generated traverses the loop 9 arranged between the two rails 1 and 2, thereby creating a detectable magnetic field at this place.
- the generator 6 at the frequency F1 is advantageously arranged in series with the TU.F1 block and creates thus the second discontinuity sought 8.
- FIG. 9 shows the current I in depending on the distance traveled on the rails in positioning the block TU.F1 creating the first discontinuity at -18 m and the TU.F3 block creating the second discontinuity at point 0.
- the cost of installing the device additional is relatively reduced and thus allows obtain a relatively precise measurement of the speed of the train running on a track. Furthermore, the measurement of this speed remains independent of a precise positioning of tags, for example, whose displacement could intervene in the event of track maintenance interventions, climatic phenomena, wheel engagement, etc.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
Priority Applications (31)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99870079A EP1048545A1 (de) | 1999-04-30 | 1999-04-30 | Verfahren zur Ermittlung der Geschwindigkeit eines Schienenfahrzeuges und Gerät dazu |
HU0200820A HUP0200820A2 (en) | 1999-04-30 | 2000-04-20 | Method for measuring the speed of a rail vehicle and equipment for carrying out the method |
KR1020017013245A KR100684465B1 (ko) | 1999-04-30 | 2000-04-20 | 철도 차량의 속도 측정 방법 및 그 장치 |
EP00920294A EP1175325B1 (de) | 1999-04-30 | 2000-04-20 | Geschwindigkeitsmessverfahren für ein schienenfahrzeug und einrichtung dazu |
PCT/BE2000/000043 WO2000066412A1 (fr) | 1999-04-30 | 2000-04-20 | Procede de mesure de la vitesse d'un vehicule sur rails et installation destinee a cet effet |
IL14596400A IL145964A0 (en) | 1999-04-30 | 2000-04-20 | Method for measuring the speed of a rail vehicle and installation therefor |
MXPA01011013A MXPA01011013A (es) | 1999-04-30 | 2000-04-20 | Procedimiento de medicion de la velocidad de un vehiculo sobre railes e instalacion destinada a este fin. |
TR2001/03024T TR200103024T2 (tr) | 1999-04-30 | 2000-04-20 | Ray üzerindeki bir aracın hızını ölçme yöntemi ve bu amaca yönelik tertibat. |
DZ003153A DZ3153A1 (fr) | 1999-04-30 | 2000-04-20 | Procédé de mesure de la vitesse d'un véhicule sur rails et installation destinée à cet effet. |
US10/031,274 US7938370B1 (en) | 1999-04-30 | 2000-04-20 | Method for measuring the speed of a rail vehicle and installation therefor |
JP2000615265A JP4176311B2 (ja) | 1999-04-30 | 2000-04-20 | レール走行車両の速度測定法およびそのための装置 |
CZ20013687A CZ297573B6 (cs) | 1999-04-30 | 2000-04-20 | Zpusob merení rychlosti kolejového vozidla a zarízení pro jeho provádení |
DE60003670T DE60003670D1 (de) | 1999-04-30 | 2000-04-20 | Geschwindigkeitsmessverfahren für ein schienenfahrzeug und einrichtung dazu |
AU40950/00A AU761240B2 (en) | 1999-04-30 | 2000-04-20 | Method for measuring the speed of a rail vehicle and installation therefor |
APAP/P/2001/002311A AP2001002311A0 (en) | 1999-04-30 | 2000-04-20 | Method for measuring the speed of a rail vehicle and installation therefor. |
CA2371588A CA2371588C (fr) | 1999-04-30 | 2000-04-20 | Procede de mesure de la vitesse d'un vehicule sur rails et installation destinee a cet effet |
CNB008069654A CN1162291C (zh) | 1999-04-30 | 2000-04-20 | 铁路车辆的速度的测量方法及其设备 |
EA200101003A EA200101003A1 (ru) | 1999-04-30 | 2000-04-20 | Способ измерения скорости рельсового транспортного средства и устройство для реализации способа |
PL00351926A PL195187B1 (pl) | 1999-04-30 | 2000-04-20 | Sposób i instalacja do pomiaru prędkości pojazdu szynowego |
SK1471-2001A SK286883B6 (sk) | 1999-04-30 | 2000-04-20 | Spôsob merania rýchlosti koľajového vozidla a zariadenie na vykonávanie tohto spôsobu |
OA1200100286A OA11934A (en) | 1999-04-30 | 2000-04-20 | Procédé de mesure de la vitesse d'un véhicule sur rails et installation destinée à cet effet. |
UA2001107365A UA57179C2 (uk) | 1999-04-30 | 2000-04-20 | Спосіб виміру швидкості рейкового транспортного засобу і пристрій для реалізації способу |
AT00920294T ATE244174T1 (de) | 1999-04-30 | 2000-04-20 | Geschwindigkeitsmessverfahren für ein schienenfahrzeug und einrichtung dazu |
BR0011224-0A BR0011224A (pt) | 1999-04-30 | 2000-04-20 | Processo de medição da velocidade de um veìculo sobre, carris e, instalação destinada a tal efeito |
IS6099A IS6099A (is) | 1999-04-30 | 2001-10-03 | Aðferð til að mæla hraða á járnbrautarfarartæki og uppsetning fyrir það |
ZA200108635A ZA200108635B (en) | 1999-04-30 | 2001-10-19 | Method for measuring the speed of a rail vehicle and installation therefor. |
MA26387A MA25456A1 (fr) | 1999-04-30 | 2001-10-26 | Procede de mesure de la vitesse d'un vehicule sur rails et installation destinee a cet effet. |
BG106052A BG106052A (en) | 1999-04-30 | 2001-10-26 | Method for measuring the speed of a rail vehicle and installation therefor |
HR20010801A HRP20010801A2 (en) | 1999-04-30 | 2001-10-29 | Method for measuring the speed of a rail vehicle and installation therefor |
NO20015319A NO20015319D0 (no) | 1999-04-30 | 2001-10-30 | Fremgangsmåte for måling av et kjöretöys hastighet og anlegg til dette |
HK02107048.5A HK1045482B (zh) | 1999-04-30 | 2002-09-26 | 鐵路車輛的速度的測量方法及其設備 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99870079A EP1048545A1 (de) | 1999-04-30 | 1999-04-30 | Verfahren zur Ermittlung der Geschwindigkeit eines Schienenfahrzeuges und Gerät dazu |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1048545A1 true EP1048545A1 (de) | 2000-11-02 |
Family
ID=8243821
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99870079A Withdrawn EP1048545A1 (de) | 1999-04-30 | 1999-04-30 | Verfahren zur Ermittlung der Geschwindigkeit eines Schienenfahrzeuges und Gerät dazu |
EP00920294A Expired - Lifetime EP1175325B1 (de) | 1999-04-30 | 2000-04-20 | Geschwindigkeitsmessverfahren für ein schienenfahrzeug und einrichtung dazu |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00920294A Expired - Lifetime EP1175325B1 (de) | 1999-04-30 | 2000-04-20 | Geschwindigkeitsmessverfahren für ein schienenfahrzeug und einrichtung dazu |
Country Status (30)
Country | Link |
---|---|
US (1) | US7938370B1 (de) |
EP (2) | EP1048545A1 (de) |
JP (1) | JP4176311B2 (de) |
KR (1) | KR100684465B1 (de) |
CN (1) | CN1162291C (de) |
AP (1) | AP2001002311A0 (de) |
AT (1) | ATE244174T1 (de) |
AU (1) | AU761240B2 (de) |
BG (1) | BG106052A (de) |
BR (1) | BR0011224A (de) |
CA (1) | CA2371588C (de) |
CZ (1) | CZ297573B6 (de) |
DE (1) | DE60003670D1 (de) |
DZ (1) | DZ3153A1 (de) |
EA (1) | EA200101003A1 (de) |
HK (1) | HK1045482B (de) |
HR (1) | HRP20010801A2 (de) |
HU (1) | HUP0200820A2 (de) |
IL (1) | IL145964A0 (de) |
IS (1) | IS6099A (de) |
MA (1) | MA25456A1 (de) |
MX (1) | MXPA01011013A (de) |
NO (1) | NO20015319D0 (de) |
OA (1) | OA11934A (de) |
PL (1) | PL195187B1 (de) |
SK (1) | SK286883B6 (de) |
TR (1) | TR200103024T2 (de) |
UA (1) | UA57179C2 (de) |
WO (1) | WO2000066412A1 (de) |
ZA (1) | ZA200108635B (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9733625B2 (en) | 2006-03-20 | 2017-08-15 | General Electric Company | Trip optimization system and method for a train |
US10308265B2 (en) | 2006-03-20 | 2019-06-04 | Ge Global Sourcing Llc | Vehicle control system and method |
US9950722B2 (en) | 2003-01-06 | 2018-04-24 | General Electric Company | System and method for vehicle control |
US9956974B2 (en) | 2004-07-23 | 2018-05-01 | General Electric Company | Vehicle consist configuration control |
US9828010B2 (en) | 2006-03-20 | 2017-11-28 | General Electric Company | System, method and computer software code for determining a mission plan for a powered system using signal aspect information |
US8914171B2 (en) | 2012-11-21 | 2014-12-16 | General Electric Company | Route examining system and method |
KR101685630B1 (ko) | 2010-03-02 | 2016-12-13 | 삼성전자주식회사 | 2상 딜레이 라인과 듀티 교정회로를 갖는 지연 동기 루프 및 그의 듀티 교정방법 |
AU2013299501B2 (en) | 2012-08-10 | 2017-03-09 | Ge Global Sourcing Llc | Route examining system and method |
KR101312076B1 (ko) | 2013-06-25 | 2013-09-25 | 한국기계연구원 | 전차속도 측정장치 |
US9255913B2 (en) | 2013-07-31 | 2016-02-09 | General Electric Company | System and method for acoustically identifying damaged sections of a route |
US10006877B2 (en) | 2014-08-20 | 2018-06-26 | General Electric Company | Route examining system and method |
CN211826092U (zh) | 2018-09-11 | 2020-10-30 | 贝克顿·迪金森公司 | 具有自动化位置获悉的用于诊断测试的机器人样品制备系统 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2153571A (en) * | 1984-01-30 | 1985-08-21 | Westinghouse Brake & Signal | Track circuit |
WO1997012796A1 (fr) * | 1995-09-29 | 1997-04-10 | Gec Alsthom Acec Transport S.A. | Procede destine a permettre le freinage et/ou l'arret d'un vehicule circulant sur une voie ainsi qu'installation destinee a cet effet |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4270716A (en) * | 1979-03-30 | 1981-06-02 | Westinghouse Electric Corp. | Transit vehicle speed control apparatus and method |
JP2663318B2 (ja) * | 1992-03-05 | 1997-10-15 | 株式会社京三製作所 | 速度検出器 |
JP2898846B2 (ja) * | 1993-05-24 | 1999-06-02 | 新日本製鐵株式会社 | 定位置停止制御装置 |
-
1999
- 1999-04-30 EP EP99870079A patent/EP1048545A1/de not_active Withdrawn
-
2000
- 2000-04-20 MX MXPA01011013A patent/MXPA01011013A/es active IP Right Grant
- 2000-04-20 OA OA1200100286A patent/OA11934A/fr unknown
- 2000-04-20 EP EP00920294A patent/EP1175325B1/de not_active Expired - Lifetime
- 2000-04-20 AT AT00920294T patent/ATE244174T1/de not_active IP Right Cessation
- 2000-04-20 EA EA200101003A patent/EA200101003A1/ru unknown
- 2000-04-20 AU AU40950/00A patent/AU761240B2/en not_active Ceased
- 2000-04-20 CN CNB008069654A patent/CN1162291C/zh not_active Expired - Fee Related
- 2000-04-20 US US10/031,274 patent/US7938370B1/en not_active Expired - Lifetime
- 2000-04-20 DZ DZ003153A patent/DZ3153A1/xx active
- 2000-04-20 PL PL00351926A patent/PL195187B1/pl not_active IP Right Cessation
- 2000-04-20 SK SK1471-2001A patent/SK286883B6/sk not_active IP Right Cessation
- 2000-04-20 HU HU0200820A patent/HUP0200820A2/hu unknown
- 2000-04-20 IL IL14596400A patent/IL145964A0/xx active IP Right Grant
- 2000-04-20 TR TR2001/03024T patent/TR200103024T2/xx unknown
- 2000-04-20 DE DE60003670T patent/DE60003670D1/de not_active Expired - Lifetime
- 2000-04-20 CA CA2371588A patent/CA2371588C/fr not_active Expired - Fee Related
- 2000-04-20 JP JP2000615265A patent/JP4176311B2/ja not_active Expired - Fee Related
- 2000-04-20 UA UA2001107365A patent/UA57179C2/uk unknown
- 2000-04-20 CZ CZ20013687A patent/CZ297573B6/cs not_active IP Right Cessation
- 2000-04-20 KR KR1020017013245A patent/KR100684465B1/ko not_active IP Right Cessation
- 2000-04-20 AP APAP/P/2001/002311A patent/AP2001002311A0/en unknown
- 2000-04-20 WO PCT/BE2000/000043 patent/WO2000066412A1/fr active IP Right Grant
- 2000-04-20 BR BR0011224-0A patent/BR0011224A/pt not_active Application Discontinuation
-
2001
- 2001-10-03 IS IS6099A patent/IS6099A/is unknown
- 2001-10-19 ZA ZA200108635A patent/ZA200108635B/en unknown
- 2001-10-26 MA MA26387A patent/MA25456A1/fr unknown
- 2001-10-26 BG BG106052A patent/BG106052A/xx unknown
- 2001-10-29 HR HR20010801A patent/HRP20010801A2/hr not_active Application Discontinuation
- 2001-10-30 NO NO20015319A patent/NO20015319D0/no not_active Application Discontinuation
-
2002
- 2002-09-26 HK HK02107048.5A patent/HK1045482B/zh not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2153571A (en) * | 1984-01-30 | 1985-08-21 | Westinghouse Brake & Signal | Track circuit |
WO1997012796A1 (fr) * | 1995-09-29 | 1997-04-10 | Gec Alsthom Acec Transport S.A. | Procede destine a permettre le freinage et/ou l'arret d'un vehicule circulant sur une voie ainsi qu'installation destinee a cet effet |
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