JPH0229997B2 - - Google Patents

Info

Publication number
JPH0229997B2
JPH0229997B2 JP58186370A JP18637083A JPH0229997B2 JP H0229997 B2 JPH0229997 B2 JP H0229997B2 JP 58186370 A JP58186370 A JP 58186370A JP 18637083 A JP18637083 A JP 18637083A JP H0229997 B2 JPH0229997 B2 JP H0229997B2
Authority
JP
Japan
Prior art keywords
phase
signal
circuit
peak
metal
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
JP58186370A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6078378A (ja
Inventor
Yasumoto Suzuki
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.)
Anritsu Corp
Original Assignee
Anritsu 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 Anritsu Corp filed Critical Anritsu Corp
Priority to JP58186370A priority Critical patent/JPS6078378A/ja
Publication of JPS6078378A publication Critical patent/JPS6078378A/ja
Publication of JPH0229997B2 publication Critical patent/JPH0229997B2/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
    • G01V3/104—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 using several coupled or uncoupled coils
    • G01V3/105—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 using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops
    • G01V3/107—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 using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops using compensating coil or loop arrangements

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)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Geophysics And Detection Of Objects (AREA)
JP58186370A 1983-10-05 1983-10-05 金属検出装置 Granted JPS6078378A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58186370A JPS6078378A (ja) 1983-10-05 1983-10-05 金属検出装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58186370A JPS6078378A (ja) 1983-10-05 1983-10-05 金属検出装置

Publications (2)

Publication Number Publication Date
JPS6078378A JPS6078378A (ja) 1985-05-04
JPH0229997B2 true JPH0229997B2 (en]) 1990-07-03

Family

ID=16187190

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58186370A Granted JPS6078378A (ja) 1983-10-05 1983-10-05 金属検出装置

Country Status (1)

Country Link
JP (1) JPS6078378A (en])

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4644286A (en) * 1985-09-17 1987-02-17 Allied Corporation Article surveillance system receiver using synchronous demodulation and signal integration
JPH0518716Y2 (en]) * 1987-08-07 1993-05-18
JPS6454281A (en) * 1987-08-25 1989-03-01 Anritsu Corp Metal detecting apparatus
JPH0619470B2 (ja) * 1988-07-26 1994-03-16 大和製衡株式会社 金属等の異物混入検出方法および検出器
JPH0619469B2 (ja) * 1988-04-13 1994-03-16 大和製衡株式会社 金属等の異物混入検出器
JPH0725735Y2 (ja) * 1989-03-31 1995-06-07 アンリツ株式会社 金属検出機
JPH089653Y2 (ja) * 1989-04-12 1996-03-21 ティーディーケイ株式会社 トナー検知用センサ回路

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1194177A (en) * 1981-02-09 1985-09-24 Kerr (Goring) Limited Metal detection apparatus
JPS5820944U (ja) * 1981-08-01 1983-02-09 株式会社カ−メイト 自動車用スキ−キャリア

Also Published As

Publication number Publication date
JPS6078378A (ja) 1985-05-04

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees