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JPS57136832A - Light transmission line for train - Google Patents
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JPS57136832A - Light transmission line for train - Google Patents

Light transmission line for train

Info

Publication number
JPS57136832A
JPS57136832A JP56021411A JP2141181A JPS57136832A JP S57136832 A JPS57136832 A JP S57136832A JP 56021411 A JP56021411 A JP 56021411A JP 2141181 A JP2141181 A JP 2141181A JP S57136832 A JPS57136832 A JP S57136832A
Authority
JP
Japan
Prior art keywords
cars
signals
train
transmission line
photodetector
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.)
Pending
Application number
JP56021411A
Other languages
Japanese (ja)
Inventor
Fusashi Tashiro
Kosei Hori
Kunio Saito
Hiroshi Takenaga
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56021411A priority Critical patent/JPS57136832A/en
Publication of JPS57136832A publication Critical patent/JPS57136832A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/114—Indoor or close-range type systems

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To realize the high-speed transmission of signals wide range between cars of a train with use of light, by carrying out the space transmission for the signals between the cars by means of a light emitting element and a photodetector plus the optical signal. CONSTITUTION:A rail 1, cars 2, a central command device 3, a terminal device 4 which performs the process of information for each car plus signal cables 5 and 6 which connect the devices 3 and 4 in a loop form are provided. A light emitting element 7 is provided at one side of the ends corresponding to each other between the adjacent cars, and a photodetector 8 is provided at the other end respectively. Thus the signals are transmitted in the space between cars by means of the optical signal and through the element 7 and the detector 8. In such a way, the high-speed transmission is possible for signals in a wide range to realize a transmission line suited to enhance the performance of a control system effective on a car.
JP56021411A 1981-02-18 1981-02-18 Light transmission line for train Pending JPS57136832A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56021411A JPS57136832A (en) 1981-02-18 1981-02-18 Light transmission line for train

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56021411A JPS57136832A (en) 1981-02-18 1981-02-18 Light transmission line for train

Publications (1)

Publication Number Publication Date
JPS57136832A true JPS57136832A (en) 1982-08-24

Family

ID=12054276

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56021411A Pending JPS57136832A (en) 1981-02-18 1981-02-18 Light transmission line for train

Country Status (1)

Country Link
JP (1) JPS57136832A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0141196A3 (en) * 1983-09-13 1986-02-05 Knorr-Bremse Ag Device for transmitting control information for cars or trains, especially for control signals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0141196A3 (en) * 1983-09-13 1986-02-05 Knorr-Bremse Ag Device for transmitting control information for cars or trains, especially for control signals

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