GB1066355A - Jointless track circuit - Google Patents

Jointless track circuit

Info

Publication number
GB1066355A
GB1066355A GB2819164A GB2819164A GB1066355A GB 1066355 A GB1066355 A GB 1066355A GB 2819164 A GB2819164 A GB 2819164A GB 2819164 A GB2819164 A GB 2819164A GB 1066355 A GB1066355 A GB 1066355A
Authority
GB
United Kingdom
Prior art keywords
output
track
frequencies
signals
receiver
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
Application number
GB2819164A
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.)
Compagnie de Signaux et dEntreprises Electriques SA
Original Assignee
Compagnie de Signaux et dEntreprises Electriques SA
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 Compagnie de Signaux et dEntreprises Electriques SA filed Critical Compagnie de Signaux et dEntreprises Electriques SA
Publication of GB1066355A publication Critical patent/GB1066355A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
    • B61L23/08—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only
    • B61L23/14—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only automatically operated
    • B61L23/16—Track circuits specially adapted for section blocking
    • B61L23/166—Track circuits specially adapted for section blocking using alternating current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/18—Railway track circuits
    • B61L1/181—Details
    • B61L1/187—Use of alternating current

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

1,066,355. Jointless track circuits. COMPAGNIE DE SIGNAUX ET D'ENTREPRISES ELECTRIQUES. July 8, 1964 [July 11, 1963], No. 28191/64. Heading B7N. A jointless track circuit comprising a pair of transmitters EF1 and EF2 operating at frequencies F1 and F2, respectively, connected across the track R1, R2 at the extremities of the circuit, a transformer T connected across the track at a point substantially midway between the transmitters and connected to a receiver R which develops an output to operate relay RV when supplied with signals at frequencies F1 and F2 and provides no output when at least one of the signals is greatly attenuated. The receiver includes band-pass circuits 1, 2 which separate the signals at frequencies F1 and F2, a modulator 3 which develops an output signal at frequency f (which may be F1 - F2), a band-pass filter 4 tuned to frequency f, an amplifier 5 and rectifier 6. In an automatic block signalling system the output of transformer T may be connected to the receiver R via an existing block line.
GB2819164A 1963-07-11 1964-07-08 Jointless track circuit Expired GB1066355A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR941147A FR1370150A (en) 1963-07-11 1963-07-11 Advanced sealless track circuit

Publications (1)

Publication Number Publication Date
GB1066355A true GB1066355A (en) 1967-04-26

Family

ID=8808093

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2819164A Expired GB1066355A (en) 1963-07-11 1964-07-08 Jointless track circuit

Country Status (3)

Country Link
DE (1) DE1455348B1 (en)
FR (1) FR1370150A (en)
GB (1) GB1066355A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3828225A (en) * 1972-09-18 1974-08-06 Westinghouse Air Brake Co Fail-safe vehicle-carried anti-collision protection receiver
FR2479763A1 (en) * 1980-04-04 1981-10-09 Vysoka Skola Dopravy Spojov TRACK CIRCUIT HAVING MULTIPLE SIGNAL SOURCES

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2445397C2 (en) * 1974-09-23 1982-09-23 Siemens AG, 1000 Berlin und 8000 München Track circuit, especially for direct current railways with chopper-controlled locomotives
US4304377A (en) * 1977-06-08 1981-12-08 Compagnie De Signaux Et D'entreprises Electriques Electrical block separating joints for railway signaling systems
DE3534708A1 (en) * 1985-09-28 1987-04-02 Ivv Ingenieurgesellschaft Fuer TRACK CIRCUIT WITH OR WITHOUT INSULATION FOR RAILWAY SYSTEMS

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE918991C (en) * 1950-04-28 1954-10-11 Lorenz C Ag Track circuit for railway safety systems
DE1128885B (en) * 1957-09-12 1962-05-03 Signaux Entr Electriques Automatic section block with non-insulated track circuits
FR1185636A (en) * 1957-10-31 1959-08-03 Mors Electricite Improvements to electrical track occupancy control devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3828225A (en) * 1972-09-18 1974-08-06 Westinghouse Air Brake Co Fail-safe vehicle-carried anti-collision protection receiver
FR2479763A1 (en) * 1980-04-04 1981-10-09 Vysoka Skola Dopravy Spojov TRACK CIRCUIT HAVING MULTIPLE SIGNAL SOURCES

Also Published As

Publication number Publication date
FR1370150A (en) 1964-08-21
DE1455348B1 (en) 1971-02-04

Similar Documents

Publication Publication Date Title
GB1330066A (en) Receiver for a frequency modulated overlay track circuit
GB981031A (en) Improvements in electrical interrogator-responder signalling systems
GB981161A (en) Improvements in or relating to interrogator-responder signalling systems
GB1433334A (en) Single side-band radio
GB980721A (en) Improvements in interrogator-responder signalling systems
GB1066355A (en) Jointless track circuit
GB1504177A (en) Dictation system
US3740550A (en) Pulse coded railway signal system
GB943482A (en) An improved stereophonic transmission system and receiver therefor
US2277469A (en) Receiving apparatus for train communication systems
DE2960124D1 (en) Circuit arrangement for the ungrounded transmission of signals across points of isolation in communication systems
GB1170049A (en) Signal Transmission Circuit
GB1276948A (en) A method of transmitting information along railway tracks and apparatus for use therein
US2282377A (en) Control means for railway train communication apparatus
GB1020037A (en) Improvements in or relating to railway signalling systems
GB1118979A (en) Improved i.l.s. air-borne receiver
US2677050A (en) Gain control means for frequency modulation receivers
SU1147628A1 (en) Railway branched circuit
GB1349651A (en) Electrical signalling for railways
GB1020702A (en) Improvements in or relating to circuit arrangements for detecting the presence or absence of an electrical input signal
GB1176639A (en) Inductive Transmission System.
GB1268782A (en) Transmission system
GB937574A (en) Improvements in or relating to remote control systems
SU141185A1 (en) Dispatch High Frequency and Signaling System
SU1020294A1 (en) Device for transmitting information to locomotive