US3588372A - Device for transmitting information between a fixed location and a railway vehicle - Google Patents

Device for transmitting information between a fixed location and a railway vehicle Download PDF

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Publication number
US3588372A
US3588372A US800580A US3588372DA US3588372A US 3588372 A US3588372 A US 3588372A US 800580 A US800580 A US 800580A US 3588372D A US3588372D A US 3588372DA US 3588372 A US3588372 A US 3588372A
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US
United States
Prior art keywords
loop
railway
railway vehicle
rails
antenna
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.)
Expired - Lifetime
Application number
US800580A
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English (en)
Inventor
Christian Jauquet
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.)
ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARIEROI ACEC SA
ACEC
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ACEC
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Filing date
Publication date
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Application granted granted Critical
Publication of US3588372A publication Critical patent/US3588372A/en
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Expired - Lifetime 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
    • B61L3/16—Continuous control along the route
    • B61L3/22—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation
    • B61L3/225—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation using separate conductors along the route

Definitions

  • This disclosure relates to a periodically crossed cable loop which is positioned between two rails of a railway for permitting the exchange of infomnation between a central location and a railway vehicle.
  • the disclosure is characterized by the fact that only one side of the periodically crossed cable loop placed in the axis of the railway is coupled to an antenna positioned on the railway vehicle in order to reduce interference.
  • the antenna is horizontal and disposed perpendicularly to said one side of the periodically crossed cable loop and US.
  • This invention relates to a device for transmitting information between a fixed location and a railway vehicle.
  • Various devices are known permitting the exchange of information between a central location and a railway vehicle and the transmission of instructions to the vehicle in the case of automatic or semiautomatic operation thereof.
  • These devices use, as a linking element, a cable forming a periodically crossed loop positioned between the two rails of the railway and one or more antennas positioned on the locomotive and coupled to the loop.
  • Such a loop is usually fed by signals originating from a central location and comprises two conductors generally fixed on the upper portion of the base of the rails. The conductors are crossed at regular intervals in such a way as to form marking points where the phase of the signals is inverted, and the counting of these points permits to measure, aboard the locomotive, the distance travelled by the vehicle.
  • the present invention overcomes all the above drawbacksv It concerns a loop ensuring a very good transmission of information and which is not sensible to disturbing circuits of the type disclosed above. It is characterized by the fact that only one of the sides of the loop, placed on the axis of the railway, is coupled to the antenna or to the ferrite antennas used on the locomotive, the antennas being horizontal and disposed perpendicularly to said side of the periodically crossed cable loop and symmetrically with respect thereto.
  • FIG. 1 illustrates a known'loop
  • FIG. 2 illustrates a loop in accordance with the invention.
  • FIG. ll of the drawings illustrates a periodically crossed cable loop, fed by signals originating from a central location, not shown, positioned between two rails 1 and 2 of a railway and comprising two conductors 3 and 4 constituting a cable generally secured to the upper portion of the base of the rails.
  • the conductors 3 and 4 are crossed at regular intervals at points 5 in such a way as to form marking points where the phase of the signals is inverted, and the counting of these points permits to measure, aboard the locomotive, the distance travelled by the locomotive.
  • their axles 6 and 7 form with the rails l and 2 a closed circuit in which the loop induces currents which circulate as indicated. by the arrows. Because the circuit is strongly coupled to the loop, the induced currents interfere with the flux of the loop in such a way that the transmission of information does not work anymore.
  • FIG. 2 illustrates a periodically crossed transmission loop consisting of two conductors 8 and 9 disposed between two rails 11 and 2 of a railway. These conductors are alternately crossed at points 10 for measuring the distance travelled by the train as disclosed above.
  • One of the sides of the loop is secured to the base of the rail l and consequently strongly coupled magnetically to the rail 1.
  • the other side of the loop is placed in the center of the railway at equal distances from each of the two rails.
  • the periodically crossed transmission loop may obviously be designed with marking points other than crossings without departing from the scope of the present invention.
  • Transmission device between a fixed location and a railway vehicle including a cable forming a loop disposed between two rails of a railway and at least one antenna positioned on said vehicle and coupled to the loop, said loop having crossings at predetermined distances, characterized by the fact that one side of this periodically crossed cable loop is placed in the axis of the railway and coupled to said antenna located on the vehicle while the other side is secured to the base of one of the two rails, said antenna being horizontal and disposed perpendicularly to the side of the periodically crossed cable loop which is placed in the axis of the railway and symmetrically with respect to said side.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Near-Field Transmission Systems (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
US800580A 1968-02-21 1969-02-19 Device for transmitting information between a fixed location and a railway vehicle Expired - Lifetime US3588372A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE711078 1968-02-21

Publications (1)

Publication Number Publication Date
US3588372A true US3588372A (en) 1971-06-28

Family

ID=3852402

Family Applications (1)

Application Number Title Priority Date Filing Date
US800580A Expired - Lifetime US3588372A (en) 1968-02-21 1969-02-19 Device for transmitting information between a fixed location and a railway vehicle

Country Status (11)

Country Link
US (1) US3588372A (fr)
BE (1) BE711078A (fr)
CA (1) CA853332A (fr)
CH (1) CH503608A (fr)
DE (1) DE1908400B2 (fr)
ES (1) ES363264A1 (fr)
FR (1) FR2002312A1 (fr)
GB (1) GB1195968A (fr)
LU (1) LU58011A1 (fr)
NL (1) NL157257B (fr)
YU (1) YU31387B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742150A (en) * 1971-04-28 1973-06-26 Mobility Sys Inc Inductively coupled data communication apparatus
US4012662A (en) * 1975-03-07 1977-03-15 Coal Industry (Patents) Limited Communication system between a transmitter, receiver station and a mobile station utilizing unidirectional amplifiers between parallel radiated transmission lines
US4041324A (en) * 1975-01-31 1977-08-09 Hitachi, Ltd. Magnetic shield system for electric cars
US5428363A (en) * 1992-09-28 1995-06-27 Texas Instruments Incorporated Antenna system for use in an automatic vehicular identification system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2347202C3 (de) * 1973-09-19 1981-09-24 Siemens AG, 1000 Berlin und 8000 München Einrichtung zum linienförmigen Informationsaustausch zwischen Schienenfahrzeugen und einer ortsfesten Station
DE19627343A1 (de) 1996-07-01 1998-01-08 Siemens Ag Einrichtung zur Eigenortung eines spurgeführten Fahrzeugs

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1414788A (fr) * 1964-04-02 1965-10-22 Westinghouse Freins & Signaux Dispositif de télécommande de véhicules ferroviaires à moteur, notamment de locotracteurs
DE1235367B (de) * 1964-06-19 1967-03-02 Siemens Ag Einrichtung zum Bestimmen von Bewegungs-richtungen fuer schienengebundene Triebfahrzeuge
DE1530397A1 (de) * 1966-03-17 1970-08-20 Siemens Ag Einrichtung in einem Fahrzeugeraet fuer Anlagen zur linienfoermigen Informationsuebertragung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742150A (en) * 1971-04-28 1973-06-26 Mobility Sys Inc Inductively coupled data communication apparatus
US4041324A (en) * 1975-01-31 1977-08-09 Hitachi, Ltd. Magnetic shield system for electric cars
US4012662A (en) * 1975-03-07 1977-03-15 Coal Industry (Patents) Limited Communication system between a transmitter, receiver station and a mobile station utilizing unidirectional amplifiers between parallel radiated transmission lines
US5428363A (en) * 1992-09-28 1995-06-27 Texas Instruments Incorporated Antenna system for use in an automatic vehicular identification system

Also Published As

Publication number Publication date
NL157257B (nl) 1978-07-17
GB1195968A (en) 1970-06-24
ES363264A1 (es) 1970-12-16
DE1908400A1 (de) 1969-10-02
YU31387B (en) 1973-04-30
DE1908400B2 (de) 1973-10-25
CH503608A (fr) 1971-02-28
NL6902690A (fr) 1969-08-25
FR2002312A1 (fr) 1969-10-17
CA853332A (en) 1970-10-06
LU58011A1 (fr) 1969-05-22
BE711078A (fr) 1968-08-21

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