JPH0519666B2 - - Google Patents

Info

Publication number
JPH0519666B2
JPH0519666B2 JP59103076A JP10307684A JPH0519666B2 JP H0519666 B2 JPH0519666 B2 JP H0519666B2 JP 59103076 A JP59103076 A JP 59103076A JP 10307684 A JP10307684 A JP 10307684A JP H0519666 B2 JPH0519666 B2 JP H0519666B2
Authority
JP
Japan
Prior art keywords
metal object
circuit
oscillation
transistor
oscillation circuit
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 - Lifetime
Application number
JP59103076A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60247182A (ja
Inventor
Choei Kuriki
Isao Ooba
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP59103076A priority Critical patent/JPS60247182A/ja
Publication of JPS60247182A publication Critical patent/JPS60247182A/ja
Publication of JPH0519666B2 publication Critical patent/JPH0519666B2/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)
JP59103076A 1984-05-22 1984-05-22 金属物体通過検出装置 Granted JPS60247182A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59103076A JPS60247182A (ja) 1984-05-22 1984-05-22 金属物体通過検出装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59103076A JPS60247182A (ja) 1984-05-22 1984-05-22 金属物体通過検出装置

Publications (2)

Publication Number Publication Date
JPS60247182A JPS60247182A (ja) 1985-12-06
JPH0519666B2 true JPH0519666B2 (en]) 1993-03-17

Family

ID=14344549

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59103076A Granted JPS60247182A (ja) 1984-05-22 1984-05-22 金属物体通過検出装置

Country Status (1)

Country Link
JP (1) JPS60247182A (en])

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105607132A (zh) * 2015-12-17 2016-05-25 无锡信大气象传感网科技有限公司 一种基于振荡检测的金属探测器

Also Published As

Publication number Publication date
JPS60247182A (ja) 1985-12-06

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term