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JPS5726942A - Data transmission system - Google Patents

Data transmission system

Info

Publication number
JPS5726942A
JPS5726942A JP10222580A JP10222580A JPS5726942A JP S5726942 A JPS5726942 A JP S5726942A JP 10222580 A JP10222580 A JP 10222580A JP 10222580 A JP10222580 A JP 10222580A JP S5726942 A JPS5726942 A JP S5726942A
Authority
JP
Japan
Prior art keywords
carrier signal
pipe
ground
signal wave
burried
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.)
Granted
Application number
JP10222580A
Other languages
Japanese (ja)
Other versions
JPS6239856B2 (en
Inventor
Masayuki Matsuura
Kimimasa Saito
Yoshihiro Yamamoto
Yasuharu Hosohara
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.)
Tokyo Gas Co Ltd
Original Assignee
Tokyo Gas Co 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 Tokyo Gas Co Ltd filed Critical Tokyo Gas Co Ltd
Priority to JP10222580A priority Critical patent/JPS5726942A/en
Publication of JPS5726942A publication Critical patent/JPS5726942A/en
Publication of JPS6239856B2 publication Critical patent/JPS6239856B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B13/00—Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
    • H04B13/02—Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Prevention Of Electric Corrosion (AREA)
  • Pipeline Systems (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

PURPOSE:To reduce the total cost including installation cost and maintenance cost, by forming a transmission line with a burried metallic conductor pipe and ground, and transmitting data carrier signal waves on the transmission line. CONSTITUTION:A data carrier signal wave is applied between a burried metallic pipe 1 and a grounded electrode E at one of two points P, P'. This carrier signal wave propagates, by taking the pipe 1 between the P, P' and ground G as a pair of transmission lines, that is, with attenuation in logarithmic proportion to a distance through the scattering in ground. The carrier signal wave attenuated through propagation can be received between the pipe 1 and the grounded electrode E' at the point P' of the P, P'.
JP10222580A 1980-07-25 1980-07-25 Data transmission system Granted JPS5726942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10222580A JPS5726942A (en) 1980-07-25 1980-07-25 Data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10222580A JPS5726942A (en) 1980-07-25 1980-07-25 Data transmission system

Publications (2)

Publication Number Publication Date
JPS5726942A true JPS5726942A (en) 1982-02-13
JPS6239856B2 JPS6239856B2 (en) 1987-08-25

Family

ID=14321708

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10222580A Granted JPS5726942A (en) 1980-07-25 1980-07-25 Data transmission system

Country Status (1)

Country Link
JP (1) JPS5726942A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63194425A (en) * 1987-01-22 1988-08-11 オウトクンプ　オイ Two-way communication device for underground facilities
JPH0220698U (en) * 1988-03-11 1990-02-09
US5587707A (en) * 1992-06-15 1996-12-24 Flight Refuelling Limited Data transfer
FR2745133A1 (en) * 1996-02-20 1997-08-22 Vernet Jean Marc METHOD AND DEVICE FOR TELEMETRY ON A METAL WORK PROTECTED BY DRAWING
WO2002054636A3 (en) * 2001-01-03 2003-04-24 Flight Refueling Ltd Data transmission in pipeline systems
FR2858495A1 (en) * 2003-07-29 2005-02-04 Jean Marc Vernet Electrical signals transmission process for electrical apparatus remote monitoring, involves varying alternate current consumption of transmitter by varying impedance to modulate industrial noise carried by cable for controlling impedance

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63194425A (en) * 1987-01-22 1988-08-11 オウトクンプ　オイ Two-way communication device for underground facilities
JPH0220698U (en) * 1988-03-11 1990-02-09
US5587707A (en) * 1992-06-15 1996-12-24 Flight Refuelling Limited Data transfer
FR2745133A1 (en) * 1996-02-20 1997-08-22 Vernet Jean Marc METHOD AND DEVICE FOR TELEMETRY ON A METAL WORK PROTECTED BY DRAWING
WO1997031438A1 (en) * 1996-02-20 1997-08-28 Ipsi Method and device for telemetry on a metal structure protected by current tapping
WO2002054636A3 (en) * 2001-01-03 2003-04-24 Flight Refueling Ltd Data transmission in pipeline systems
FR2858495A1 (en) * 2003-07-29 2005-02-04 Jean Marc Vernet Electrical signals transmission process for electrical apparatus remote monitoring, involves varying alternate current consumption of transmitter by varying impedance to modulate industrial noise carried by cable for controlling impedance

Also Published As

Publication number Publication date
JPS6239856B2 (en) 1987-08-25

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