JPH0148998B2 - - Google Patents

Info

Publication number
JPH0148998B2
JPH0148998B2 JP59234678A JP23467884A JPH0148998B2 JP H0148998 B2 JPH0148998 B2 JP H0148998B2 JP 59234678 A JP59234678 A JP 59234678A JP 23467884 A JP23467884 A JP 23467884A JP H0148998 B2 JPH0148998 B2 JP H0148998B2
Authority
JP
Japan
Prior art keywords
detection
reference signal
circuit
detected
signal
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
JP59234678A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61112988A (ja
Inventor
Takakazu Myahara
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.)
Elm Co Ltd
Original Assignee
Elm 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 Elm Co Ltd filed Critical Elm Co Ltd
Priority to JP59234678A priority Critical patent/JPS61112988A/ja
Publication of JPS61112988A publication Critical patent/JPS61112988A/ja
Publication of JPH0148998B2 publication Critical patent/JPH0148998B2/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
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
    • G01V3/101—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil
    • G01V3/102—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil by measuring amplitude

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
JP59234678A 1984-11-07 1984-11-07 通過型磁気センサ Granted JPS61112988A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59234678A JPS61112988A (ja) 1984-11-07 1984-11-07 通過型磁気センサ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59234678A JPS61112988A (ja) 1984-11-07 1984-11-07 通過型磁気センサ

Publications (2)

Publication Number Publication Date
JPS61112988A JPS61112988A (ja) 1986-05-30
JPH0148998B2 true JPH0148998B2 (enExample) 1989-10-23

Family

ID=16974743

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59234678A Granted JPS61112988A (ja) 1984-11-07 1984-11-07 通過型磁気センサ

Country Status (1)

Country Link
JP (1) JPS61112988A (enExample)

Also Published As

Publication number Publication date
JPS61112988A (ja) 1986-05-30

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