AU3555871A - Signalling systems - Google Patents

Signalling systems

Info

Publication number
AU3555871A
AU3555871A AU35558/71A AU3555871A AU3555871A AU 3555871 A AU3555871 A AU 3555871A AU 35558/71 A AU35558/71 A AU 35558/71A AU 3555871 A AU3555871 A AU 3555871A AU 3555871 A AU3555871 A AU 3555871A
Authority
AU
Australia
Prior art keywords
signalling systems
signalling
systems
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
AU35558/71A
Inventor
David Evan Naunton Davies
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.)
British Railways Board
Original Assignee
British Railways Board
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 British Railways Board filed Critical British Railways Board
Publication of AU3555871A publication Critical patent/AU3555871A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L7/00—Remote control of local operating means for points, signals, or track-mounted scotch-blocks
    • B61L7/06—Remote control of local operating means for points, signals, or track-mounted scotch-blocks using electrical transmission
    • B61L7/08—Circuitry
    • B61L7/083—Common line wire control using currents of different amplitudes, polarities, frequencies, or the like
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C15/00—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path
    • G08C15/02—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path simultaneously, i.e. using frequency division
    • G08C15/04—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path simultaneously, i.e. using frequency division the signals being modulated on carrier frequencies

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Amplitude Modulation (AREA)
  • Selective Calling Equipment (AREA)
AU35558/71A 1970-11-13 1971-11-10 Signalling systems Expired AU3555871A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5414870A GB1360000A (en) 1970-11-13 1970-11-13 Signalling systems

Publications (1)

Publication Number Publication Date
AU3555871A true AU3555871A (en) 1973-05-17

Family

ID=10470080

Family Applications (1)

Application Number Title Priority Date Filing Date
AU35558/71A Expired AU3555871A (en) 1970-11-13 1971-11-10 Signalling systems

Country Status (9)

Country Link
AT (1) AT317304B (en)
AU (1) AU3555871A (en)
CH (1) CH543144A (en)
DE (1) DE2156393B2 (en)
FR (1) FR2114609A5 (en)
GB (1) GB1360000A (en)
IT (1) IT941120B (en)
SE (1) SE378495B (en)
ZA (1) ZA717485B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0776737B2 (en) * 1988-10-21 1995-08-16 富士重工業株式会社 Vehicle diagnostic system

Also Published As

Publication number Publication date
SE378495B (en) 1975-09-01
AT317304B (en) 1974-08-26
ZA717485B (en) 1972-07-26
FR2114609A5 (en) 1972-06-30
GB1360000A (en) 1974-07-17
IT941120B (en) 1973-03-01
CH543144A (en) 1973-10-15
DE2156393B2 (en) 1976-04-22
DE2156393A1 (en) 1972-06-22

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