JPS56132585A - Cable tracking system - Google Patents

Cable tracking system

Info

Publication number
JPS56132585A
JPS56132585A JP3605380A JP3605380A JPS56132585A JP S56132585 A JPS56132585 A JP S56132585A JP 3605380 A JP3605380 A JP 3605380A JP 3605380 A JP3605380 A JP 3605380A JP S56132585 A JPS56132585 A JP S56132585A
Authority
JP
Japan
Prior art keywords
magnetic field
moving body
cable
detector
detection sensitivity
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
JP3605380A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6334991B2 (enrdf_load_stackoverflow
Inventor
Shizuo Suzuki
Yoshinao Iwamoto
Yuichi Shirasaki
Kenichi Asakawa
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.)
KDDI Corp
Original Assignee
Kokusai Denshin Denwa KK
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 Kokusai Denshin Denwa KK filed Critical Kokusai Denshin Denwa KK
Priority to JP3605380A priority Critical patent/JPS56132585A/ja
Publication of JPS56132585A publication Critical patent/JPS56132585A/ja
Publication of JPS6334991B2 publication Critical patent/JPS6334991B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/02—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current
    • G01V3/06—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current using AC

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Electric Cable Installation (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
JP3605380A 1980-03-24 1980-03-24 Cable tracking system Granted JPS56132585A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3605380A JPS56132585A (en) 1980-03-24 1980-03-24 Cable tracking system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3605380A JPS56132585A (en) 1980-03-24 1980-03-24 Cable tracking system

Publications (2)

Publication Number Publication Date
JPS56132585A true JPS56132585A (en) 1981-10-16
JPS6334991B2 JPS6334991B2 (enrdf_load_stackoverflow) 1988-07-13

Family

ID=12458966

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3605380A Granted JPS56132585A (en) 1980-03-24 1980-03-24 Cable tracking system

Country Status (1)

Country Link
JP (1) JPS56132585A (enrdf_load_stackoverflow)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5275352A (en) * 1975-12-19 1977-06-24 Nippon Telegr & Teleph Corp <Ntt> Buried metal pipe detector and receiver

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5275352A (en) * 1975-12-19 1977-06-24 Nippon Telegr & Teleph Corp <Ntt> Buried metal pipe detector and receiver

Also Published As

Publication number Publication date
JPS6334991B2 (enrdf_load_stackoverflow) 1988-07-13

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